Hallit e Seals
Housing designs & seal options Cylinder housings and seal options The The followi following ng diagrams illus llustr trate ate how Hall Hallit ite’s e’s wide range range o f prod products ucts c an be a pplied pplied to a selec selec tion of some of the most popular cylinder designs servicing the world’s fluid power industry. The The diagrams diagrams show differ different ent gland and p iston arr arrangements to ilillus lustrate trate alternati alternative ve sea seali ling ng methmethods currently in use and a suitable Hallite product. If the the a ppli pp lic c a tion tion which whic h you ar a re interes interested ted in is of a non-standa non-standa rd nature nature please p lease contac c ontac t Ha Ha llit llite’s e’s technic technic al dep artment artment..
G la n d
Pisto n
Heavy duty
Heavy duty
Type Type 13, 14
Type Type 51, 52
Heavy duty
Heavy duty
Type Type 18
Type Type 58
Heavy duty
Heavy duty
Type 621, 631 652, 653
Type Type 730, 735
Medium duty
Medium duty
Type Type 601, 605
Type Type 753
Hallit e Seals Seals
Housing designs & seal options G la n d
Pist o n
Medium duty
Medium duty
Type Type 601, 605
Type Type 601, 606
Medium duty
Medium duty
Type Type 605
Type Type 53
Medium duty
Medium duty
Type Type 513
Type Type 511, 512
Light to m ed ium duty
Light to m ed ium duty
Type Type 616, 16
Type Type 754, 755, 770
High speed light duty
High speed light duty
Type Type 16
Type Type 54
Hallite Seals
Housing Design Hallite Seals’ product data sheets give information indicating the allowable extrusion gap a seal can see at pressure during its working life. The extrusion gap can be calculated using the tolerance build ups within the cylinder and any dilation that may occur under pressure. Maximum extrusion gap = F max (see drawing below). F max is the maximum extrusion gap for the seal
Extrusion is closely linked to pressure and temperature. In general, the best seal performance and life is provided by specifying the smallest possible extrusion gap. The figures shown for the extrusion gap within the operating conditions of Hallite’s product data sheets, relate to the maximum permissible, worst case situation with the gap all on one side.
Minimum metal to metal clearance = F min (see drawing below). F min for cylinders with minimal side loading should be > 0.1mm (0.004”).
Rods Maximum extrusion gap
Type 735, 754, 755
F max = (ØD3 max + ØD2 max) - S min - Ød 1 min 2
1.2
) 1.0 m m (
Minimum metal to metal clearance (extrusion gap)
p a g n o i s u r t x E
F min = S min -(ØD2 max - ØD3 min) 2
0.8
0.6
Hallite 735 0.4
Hallite 754 0.2
Hallite 755
0
F max
Piston seal groove
Rod seal groove Bearing housing diameter Housing ¯D2
Gland bore diameter ¯D 3 Rod
Rod diameter ¯d 1
0
(shown exaggerated)
500
600
700
800
600
700
800
1.2
Piston diameter ¯D 3
Bearing section
F min
Note: Rod is not concentric with gland, because of clearances.
400
Pressure bar
Piston
S
Rod Bearing
300
Type 15, 16, 18
Bore diameter ¯D 1
S
200
F max
Bearing housing diameter ¯d 2
Cylinder
100
F min
) m m ( p a g n o i s u r t x E
Piston Bearing
1.0 0.8
Hallite 16
0.6 0.4
Hallite 15 Hallite 18
0.2 0 0
100
200
Pistons Maximum extrusion gap
F max = ØD1 max - S min - (Ød3 min + Ød2 min) + dilation 2 Minimum metal to metal clearance (extrusion gap)
F min = S min - (Ød 3 max - Ød2 min) 2
300
400
500
Pressure bar
Note: Piston is not concentric with cylinder bore, because of clearances. (shown exaggerated)
Type 601, 605, 606, 610, 621, 631, 652, 659 1.2
) m m ( p a g n o i s u r t x E
1.0 0.8
0.6
Hallite 601 Hallite 605 Hallite 606 Hallite 610 Hallite 659
0.4 0.2
Hallite 621 Hallite 631 Hallite 652
0 0
1 00
200
300
400
500
600
700
800
Pressure bar
Calculate both F max and F min. Ensure the F min is greater than 0.1mm (0.004”) and F max is less than the maximum extrusion gap stated on the seal data sheet at the application’s working pressure. For built-in metal bearings, the extrusion gap calculation is simpler. For F max: Rod = ØD3 max - Ød1 min + dilation Piston = ØD1 max - Ød3 min + dilation
Vee pack sets 1.2
) 1.0 m m 0.8 ( p a g n o i s u r t x E
0.6
Hallite 07 Hallite 12 Hallite 09 Hallite 13 Hallite 11 Hallite 14
0.4 0.2 0 0
100
200
300
400
500
Pressure bar
F min must be zero
600
700
800
Hallite Seals
Use and fitting of seals Our quality control methods for material and manufacturing processes ensure that all seals leaving our factories are in a condition capable of giving a long and reliable service life. We have found from many years experience, that premature seal failure can be avoided if the following recommendations are considered at the design and manufacturing stage of the cylinder: 1. Specify piston and gland bearings which are adequately proportioned to support the cylinder loads. As a result of mounting misalignments and / or the working action of the cylinder, piston and gland bearings will be subjected to side-loading, causing damage to the rod or the tube surface and hence the seal, if the bearings are inadequate. 2. Ensure that seals are stored distortion free in a cool, dry and dark place prior to fitting. 3. Check that the seal housing is free from damage likely to harm the seal. Remove all sharp edges and burrs from metal parts, paying particular attention to ports, grooves and threads over or through which the seal passes during assembly. 4. Clean all seal housing areas, ensuring that all metallic particles and other contaminants have been removed. Check that other surfaces adjacent to the passage of the seal on fitting are also free of dirt, swarf or other contaminants. Check that both static and dynamic
housing surface finishes meet specifications. 5. Where the difference between a thread diameter over which the seal must pass and the seal diameter is small, use some form of protection over the thread, such as a fitting sleeve made of hard plastic. 6. Check that the seal is of the correct type, part number and size, and that the specified material is correct. If there is any doubt regarding the material contact your local Hallite sales office. 7. Lubricate all seals and metal components liberally with clean operating fluid or a compatible grease prior to assembly. N.B. Silicone grease should not be used in normal hydraulic applications. 8. Where seals fitted to sub-assemblies, such as pistons, are awaiting further fitting operations, ensure that the seals are not subjected to any misaligned or localised loading which will cause local deformation. Ensure that sub-assemblies remain clean. 9. The use of metal levers is not recommended but should they be used it is imperative that they are completely smooth and free from nicks and burrs. When using them ensure that the metal surfaces adjacent to the seal are not damaged. 10. Flush the hydraulic system thoroughly before connecting the cylinder to it.
Typical hydraulic cylinder layout showing installation features to be considered for satisfactory seal life.
6
3
3
1
3
1
3
3
5
4
5
4
6
4
6
3
Hallite Seals
Storage of Seals Storage c ond itions
Most polymeric items including vulcanized rubber and other elastomers tend to change their properties during storage a nd may become unservicea ble. This may be due to hardening, softening, c rac king, c razing o r other degradation and may be the result of oxygen, ozone, light, heat and/or humidity. The following rec ommendations indicate the most suitable conditions for storing elastomeric items, whether as a single item or co mposite product. 1. Tem pera ture Storage temperatures should not exceed 75 F. Low temperatures are not permanently harmful provided the rubber items are handled carefully and not distorted. When taken from low temperatures items should be raised to approximatley 85 F before they are used. 2. Hum id ity Optimum humidity is about 65% in a draft-free atmosphere. 3. Lig ht Protec tion from direc t sunlight a nd strong artificial light with a high ultraviolet content is important. Unless packed in opaque containers, it is advisable to cover windows with red or orange screens or coatings. 4. Oxyg en a nd Ozone Elastomeric items should be protected from circulating air wherever po ssible. As ozone is pa rticularly harmful to rubber, storage rooms should be free from equipment that may give rise to electric spa rks or discharge. Wrapping, storage in airtight containers or other suitable means should be used for vulcanised rubber items.
8. Conta c t with Non-Meta ls C ontac t with other rubbe rs or creosotes should be avoided. 9. Stoc k Rotation Elastomers should be stored for as short a period as possible, and strict stock rotation should be practiced. 10. Clea ning Organic solvents such as trichloroethylene, carbon tetrachloride and petroleum are the most harmful agents. Soa p and water and methylated spirits are the least harmful, and a ll pa rts should be dried at room temperature before use. 11. Shelf Life The table shows the storage life of seal components made from the more common materials under ideal conditions. Storing unde r less than ideal conditions will reduce the life.
C areful inspection o f the following should be ma de before installation after storage: a. b. c. d.
Mechanical damage Perma nent disto rtion C ra cks o r surfa ce c ra zing Tackiness or surface softening/hardening
The appea ranc e of 'bloom' is relatively unimportant, except in certain non-toxic applications. Thin compo nents (less than 1/16in/1.6mm) tend to be more critically affec ted. BASE POLYMER
PRIMARY
EXTENSION OF
(ISO DESIGATION)
STORAGE PERIOD
STORAGE PERIOD AFTER RE-
(YEARS)
INSPECTION (YEARS)
5. Deform ation Where possible, rubber items should be stored in a relaxed po sition, free from tension or compression. Laying the item flat a nd a voiding suspension or crushing keep s it free from strain and minimises deformation.
FLUORO CA RBON (FKM)
5
7
3
5
2
NITRILE (NBR) HYTHANE (EU)
6. C on ta c t w ith Liq uid a nd Se m i- So lid Ma te ria l C onta ct with liquids and semi-solid materials, pa rticularly solvents, such as oils or grea ses should be avoided unless so packed by the manufacturer.
10
ETHYLENE PROPYLENE (EPDM )
THERMOPLASTIC POLYESTER ELASTOMER
POLYUERETHANE (AU)
ENGIN EERING THERMO P LASTICS:
7. Conta c t with Meta ls Metals such as manganese, iron and copper, or copper alloys can have a ha rmful effec t on rubbe r. A layer of pa per, polyethylene or cellophane will keep these sepa rated.
AC ETAL (POM) POLYAM IDE (PA)
UNLIM ITED
GLA SSFILLED NYLON (PA ) PTFE PO LYPHENYLENE SULFIDE (PPS)
ENGINEERING THERMO SETS: TYPE 506 BEARING STRIP
Hallit e Seals
UNLIMITED
Hallit e Seals
Materials & fluid compatibility Max. continuous working temperatures C° and temperature ranges for materials, within fluid power fluids
SERVICE FLUIDS Fluids based on mineral oils
Temperature range for fluid °C
+ 150 - 40
+ 150 - 40
+ 160 - 50
Greases
+ 100 - 30
+ 100 - 30
Fuels
+ 250 - 50
Maximum continuous service temperature in fl uids °C NBR 70 IRHD NBR 90 IRHD Nitrile (medium)
+ 100 - 30
+ 120 - 30
100
90
100
100
100
100
*
*
*
FKM 75 IRHD FKM 90 IRHD Fluoro-elastomer
+ 200 - 20
+ 250 - 20
150
150
160
100
100
200
150
150
150
EPDM 70 IRHD EPDM 80 IRHD
+ 120 - 50
+ 150 - 50
NS
NS
NS
NS
NS
120
NS
NS
NS
VMQ 70 IRHD Silicone
+ 200 - 55
+ 250 - 55
*
*
*
*
100
*
NS
NS
NS
HNBR 75 IRHD Hydrogenated nitrile
+ 130 - 30
+ 150 - 30
130
110
130
100
100
130
*
*
*
IIR Butyl
+ 120 - 40
+ 140 - 40
NS
NS
NS
NS
NS
120
NS
NS
NS
FFKM Perfluoroelastomer
+300 +200 +40 -20
150
150
160
100
100
200
150
150
150
AU Polyester PU
+ 100 - 30
+ 110 - 30
100
100
100
100
100
100
60
60
60
EU Polyether PU
+ 100 - 40
+ 110 - 45
100
100
100
100
100
100
60
60
60
Polyester elastomer
+ 100 - 40
+ 120 - 40
100
100
100
100
100
100
60
60
60
PA Polyamide
+ 100 - 40
+ 120 - 40
100
100
100
100
100
100
100
100
100
POM Acetal
+ 100 - 45
+ 120 - 45
100
100
100
100
100
100
100
100
100
PPS Polyphenylene sulphide
+ 200 - 40
+ 200 - 40
150
150
160
100
100
200
150
150
150
PTFE Polytetrafluoroethylene
+ 200 - 200
+ 200 - 200
150
150
160
100
100
200
150
150
150
Thermosetting polyester resin
+ 100 - 50
+ 130 - 200
100
100
100
100
100
100
100
100
100
PEEK Polyetheretherketone
+ 250 - 65
+ 300 - 65
150
150
160
100
100
250
150
150
150
values vary greatly for individual elastomers within this group NS Denotes that the elastomer is not suitable * DenotesThethatwork of the BFPA technical working group ‘TC16/WG8’in the compilation of this table is acknowledged.
Hallit e Seals
Materials & fluid compatibility Max. continuous working temperatures C° and temperature ranges for materials, within fluid power fluids
SERVICE FLUIDS Fire-resistant hydraulic fluids
+ 60 +5
+ 60 +5
+ 60 - 30
+ 100 - 50
Environmentally acceptable fluids
+ 150 -0
+ 60 - 10
+ 100 - 40
+ 100 - 50
+ 150 - 50
Other service fluids
+ 60 (1) + 5.......
+ 200 +2
+ 130 - 50
Maximum continuous service temperature in fluids °C 60
60
60
NS
NS
60
60
60
100
80
100
NS
60
60
NS
NS
150
60
100
80
150
100
200
NS
NS
NS
60
80
80
NS
NS
NS
NS
120
120
120
NS
NS
NS
NS
NS
NS
NS
NS
*
100
200
80
60
60
60
NS
NS
60
60
80
130
130
130
NS
NS
NS
60
100
120
NS
NS
NS
NS
120
120
80
60
60
60
100
150
60
100
100
150
150
200
130
40
40
NS
NS
NS
60
60
60
100
40
40
NS
60
60
40
NS
NS
60
80
60
100
60
80
NS
60
60
NS
NS
NS
60
80
60
100
60
80
NS
60
60
60
100
100
60
100
100
100
60
80
80
60
60
60
100
100
60
100
100
100
80
80
80
60
60
60
100
150
60
100
100
150
150
200
130
60
60
60
100
150
60
100
100
150
150
200
130
60
60
40
100
100
60
100
100
100
80
100
NS
60
60
60
100
150
60
100
100
150
150
200
130
In view of the variations in formulation of both oils and polymers, the compatibility of all combinations should be confirmed by testing and field service performance for each application. (1) Temperature range for water in fluid power applications.
Hallite Seals
Surface roughness Surfac e roughness has a very important influenc e on the life and leakage performance of a recipricating sealing system.
AIR Rq Ra Mea n line Rt
METAL
Bore surface finishes can be more problematic. The typica l methods of obtaining a bore finish are summarised in the figure below. Drawn over mandrel (DOM) tubing, as is, can be adequate, or a potential disaster depending on the actual surface texture achieved and the application. Increa sing use is being made of Special Smooth Inside Diame ter (SSID) DOM tubing, but in certain circumstanc es, mainly when the seal is be ing driven into the pressure, it can lead to wear of the seal through flow erosion. Such DOM tubing req uires careful spe cification. The co nsistency of roller burnished or honed tube is to be prefe rred . Skived and roller burnished tubing is very smooth (less than 0.1µm Ra) (4 µin CLA) a nd ma y be too smooth for rubber sea ling elements in some applications. True honed tube, produc ed be twee n (0.1 and 0.4 µm Ra) (4-16 µin CLA) is the most expensive, but has the best finish.
Note : The vertic al sca le is 40 times the Horizonta l sc ale
Static surface finishes
Definitions
Ma ny parameters can be used to describe surfac e finishes and these are explained in ISO 4287 and ISO 4288. Those in most common use in the fluid power industry include:Ra, which is defined as the arithmetical mean d eviation of the assessed profile. The inch eq uivalent parameter is C LA (c entre line a verage). A surfac e finish of 0.4 µm Ra is exac tly equivalent to 16 µin CLA. Rt, whic h is the total height of the profile.There is no mathematical relationship between Ra and Rt. Rq, which is the root mean square deviation of the assessed profile. The equiva lent term in inches is RMS (Root Mean Squa re). The Rq (RMS) of a surfac e is approximatly 10% greater than the Ra (C LA) value.
The surfac e roughness pa rameters given above do not give any indication of the sharpness of the surface. The peaks of the profile should be well rounded as sharp surface finishes can lead to rapid seal wear.
The static sea ling surfac e finish must not be ignored in the c ontrol of lea kage. Generally, these a re fine turned and should be free from chatter marks. HOT DRAWN TUBE
ROLLED AND WELDED TUBE
COLD DRAWN OVER MANDREL(DOM) (THIS IMPROVES MECHANICALPROPERTIES BYWORK HARDENING)
FINEFINISHED DO M
SKIVED AN D
HONED
(i.e. AS DRAWN)
ROLLER BURNI SHED
(INTERNALLY GROUND)
SURFAC E FINISH
SURFACE FINISH
SURFACE FINISH
>0.1 µm Ra
<0.1 µm Ra
0.1 - 1.6 µm Ra
(>4 µin CLA)
(<4 µin CLA)
(4-16 µin CLA) TYPIC ALLY 0.4 µm Ra (16 µin CLA)
Dynamic surface finishes
Piston rods are generally hard c hrome p lated . The hardness should be a t least 67 Roc kwell C. This gives an excellent tribological surfac e a nd provided the rods are produced by an established supplier within a surface finish range of 0.1 to 0.3 µm Ra (4-12 µin CLA) no major problem should ensue, although the optimum surface finish may well depend on the sea l material.
SURFACE TEXTURE
SURFAC E TEXTURECHA RAC-
MA TTG REY
TERISTIC
(PO SSIBLY WITH
CIRCUMFERENTIAL
TERISTIC
AXIAL LINES)
LINES
CROSS-HA TCHED
(SSID TUBING
(O PTICAL EFFECT)
PATTERN O F
IS REFLECTIVE)
SURFACE TEXTURECHA RAC-
FINEGROOVES (EMERY LAP-O NE DIRECTIONAL)
Methods of manufacturing of tubes for hydraulic cylinders and resulting surface textures.
Hallite Seals
Hallite Seals
Operating conditions Cylinder Specification
Light Duty
Medium Duty
Heavy Duty
Pressure Max. Normal Working
350 bar 5000 psi 160 bar 2300 psi No Pressure Peaks
500 bar 7500 psi 250 bar 3600 psi Intermittent Pressure Peaks
700 bar 10000 psi 400 bar 6000 psi Regular Pressure Peaks
Design
Lower operating stresses. Rigid well aligned mounting, minimal side loading.
Steady operating stresses with intermittent high stress, some side loading.
Highly stressed for majority of its working life. Side Ioading common.
Condition of Fluid
Good system filtration no cylinder contamination likely.
Good system filtration but some cylinder contamination Iikely.
Contamination unavoidable from internal and external sources.
Working Environment
Clean, and inside a building. Operating temperature variations limited.
Mixture of indoor & outdoors but some protection from the weather.
Outdoors all the time or a dirty indoor area. Wide variations in temperature, both ambient & working. Difficult service conditions.
Usage
Irregular with short section of stroke at working pressures. Regular usage but at low pressure .
Regular usage with most of the stroke at working pressure.
Large amount of usage at high pressure with peaks throughout the stroke.
Typical Applications
Machine tools, lifting equipment, mechanical handling, injection moulding machines, control and robot equipment, agr icultural machiner y, packaging equipment, aircraft equipment & light duty tippers.
Heavy duty lifting equipment, agricultural equipment, light duty off road vehicles, cranes & lifting platforms, heavy duty machine tool & injection moulding machines, some auxiliary mining machinery, aircraft equipment, presses, heavy duty tippers (telescopic), heavy duty mechanical handling.
Foundr y & metal fabrication plant, mining machinery, roof supports, heavy duty earth moving machinery, heavy duty off-road vehicles, heavy duty presses.
Pressure, Speed, Temperature Range From many years of application experience with sealing hydraulic equipment, supported by the results from an extensive test programme, we know that it is necessary to link the three main operating features of speed, pressure, and temperature to achieve a satisfactory seal performance. After carefully considering each product we are able to specify the maximum speed and pressure with a temperature range within which the seal will operate safely. If your operating conditions do not comply with those recommended please send your details to your local Hallite sales office.
Swivel Seal
Hallite 80 Hallite Seals International Limited 130 Oldfield Road, Hampton Middlesex. TW12 2HT Tel : 0181 941 2244 Fax : 0181 783 1669 e-mail:
[email protected]
Australia Hallite Seals Australia Pty Limited 1/1 St.James Place Seven Hills, N.S.W. 2147 (PO Box 91) Tel : 02 96 20 7300 Fax : 02 9620 7400 e-mail:
[email protected]
Designed & eng ineered for ease of use The Hallite 80 is designed specifically for use in swivel joints or rotary unions commonly found on earthmoving equipment. Swivel joints are used on machines where a 360° movement is required and enables hydraulic pressure to be transferred through the joint. A one piec e seal manufac tured in Hallite’s Hythane®181, the Hallite 80 is ea sily fitted in its groo ve a nd provides exce llent sealing under normal working conditions.
The Hallite 80
Canada Hallite Seals (Canada) Limited 83 Galaxy Boulevard. # 41 Etobicoke, Ontario. Canada. M9W 5X6 Tel : (416) 675 2505 Fax : (416) 675 4341 e-mail:
[email protected]
• Pop s in the groo ve The elastic a nd flexible nature of the Hythane ma terial enables the Hallite 80 to be easily fitted in its groo ve.
France Hallite (France) Limited Z.A. Les Petits Carreaux, 1 Av Des Lys 94385 Bonneuil-sur-marne, Cedex. Tel : 01 43 77 85 50 Fax : 01 43 77 93 93
Germany Dichtelemente Hallite GmbH. Billwerder Ring 17 21035 Hamburg. Tel : (040) 73 47 48-0 Fax : (040) 73 47 48 49 e-mail:
[email protected]
• Rep lac es 2 part seals The Hallite 80 swivel seal is a one piece double a cting seal and replac es two pa rt sea ls typically used in swivel joints.
Italy Hallite Italia S.r.l. Via Umbria, 33 57017 Stagno - Collesalvetti (Livorno) Italia. Tel : 0586 943666 Fax : 0586 943700
• Hard wearing The hard wea ring nature of Hallite’s Hythane material provides long life in service .
U.S.A. Hallite Seals Inc. 3820 Merchant Road Fort Wayne, Indiana. 46818 Tel : (219) 489 0002 Fax : (219) 489 5119 e-mail:
[email protected]
• Instant sea ling Special pressure activation grooves are incorporated in the seal’s design to enable an immediate seal of the joint.
• Exc ellent service range The Hallite 80 is designed to operate under normal working conditions at pressures of 350 bar / 5000 p.s.i. and at temperatures of between -45°C to 110°C and -50°F to 230°F.
All our ac tivities conform to the highest quality assuranc e systems. Hallite Sea ls International quality management systems are accredited to ISO 9001 and are approved by many of the world’s foremost OEM’s. F9B20H89H
Piston Seal Double Acting
Hallite 83 ANTI EXTRUSION RING SYNTHETIC RUBBER SEALING MEMBER
®
FEATURES •
EFFIC IENT SEA LIN G
•
LOW CO ST
•
INTERC HANG EA BLE
•
WITH M O ST
•
CO M PETITIV E DESIG NS
•
RO BUST C ONSTRUCTIO N
•
LO W FRIC TIO N
•
SIMPLE MA CHINING
•
LONG LIFE
•
EA SY A SSEM BLY
INSTALLATIO N Fast assembly of the seal is carried o ut as follows: The intermediate seal is stretched over the piston into the rece ss. The split anti-extrusion rings are positioned with the concave face against the seal.
OPERATING CONDITIONS MAXIMUM WORKING PRESSURE
MAXIMUM SPEED
TEMPERATURE RANGE
TEMPERATURE RANGE
m /sec
—30°C + 80°C
—30°C + 100°C
0.5
250 bar /.3750 p.s.i
160 bar / 2400 p.s.i.
0.15
400 bar / 6000 p.s.i.
200 bar / 3000 p.s.i.
SURFACE ROUGHNESS
DYNAMIC SEALING FACE STATIC SEALING FACE
ØD1 Ød1,Ød2
STATIC HOUSING FACES Ød3, L 1, L2
µmRa
µmRt
µin CLA
0.1 to 0.4
4 max
4 to 16
1.6 max
10 max
63 max
3.2 max
16 max
125 max
CHAMFERS & RADII in
S E A LS E CT IO N
S
0.187
0.250
0.375
MIN CHAMFER
C
0.156
0.187
0.250
MEDIA
MAX FILLET RAD
0.016
0.016
MAX FILLET RAD
r1 r2
0.010
Seals are suitable for mineral based hydraulic fluid, wa ter soluble a nd water glycol fluids. The temp erature for the standa rd range can be -40°C for intermittent use. Other materials are available which can extend the temperature range down to 60°C or up to +135 °C a nd to suit ester based or synthetic non-flammable fluids.
0.010
0.016
0.016
All our ac tivities co nform to the highest qua lity assuranc e systems. Hallite Seals International quality management systems are accredited to ISO 9001 and are approved by many of the world’s foremost OEM’s.
Design The Hallite Tri-Seal assembly offers the engineer many ad vantages when considering the design o f cast iron,bronze,alloy etc .one-piece p istons in do uble-acting hydraulic c ylinders, not the least being c ost effectiveness with long and efficient sea l life. The Tri-Seal co nsists of two split plastic a nti-extrusion rings and a nitrile synthetic rubber sealing member.Under pressure, the seal exerts a wedging action on the anti-extrusion ring, reducing the clearance between the cylinder bore and the piston, thus minimising the possibility of extrusion of the seal. Wear rings are also available for this assembly, allowing the designer to benefit from the following a dvantages :
•Eliminate metal to metal contact in the bore •Improved alignment for optimum seal life
•One piece steel piston •Smoother operation
Piston Seal Double Acting
Hallite 83 INCH
L
L
C
L
L
C
20°— 30° F
20°— 30° r
S
r
Ød
ØD
Ød
WITHOUT WEAR RINGS
BO RE
TO L
Ød
H O US IN G
TO L
BE AR I N G
TO L
PISTO N
DIA
DIA
DIA
DIA
Ød 1
Ø d2
Ø d3
+0.005
1.125
+0.005
-0.005 2.000
+0.005
+0.005
1.500
+0.005
2.000
+0.005
+0.005
3.250
+0.005
2.500
+0.005
2.750
+0.005
+0.005
4.000
+0.005
3.000
+0.005
+0.005
3.250
+0.005
+0.005
2.774
4.250
+0.005
3.023
5.250
+0.005
1.950
-0.001
-0.001
-0.001
3.274
-0.001
2.450
-0.001
2.940
-0.001
3.190
5.713
-0.001
PA RT
LEN GTH L 1 TOL + 0.005
LENGTH L 2 TOL + 0.004 - 0
NUM BE R
0.452
0.250
6111910*
+0.005
0.587
0.250
2326310*
+0.005
0.587
0.250
2122010*
+0.005
0.587
0.250
2122110*
+0.005
0.587
0.250
2327610*
0.587
0.250
2122210*
0.780
0.250
2326410*
0.780
0.375
2326510*
0.780
0.375
2326610*
-0.005 3.440
+0.005 -0.005
3.940
+0.005 -0.005
4.910
-0.005
-0.005
BE A RING
-0.005
-0.005 4.713
+0.005
HO US I NG
-0.005
-0.005 3.773
TO L
-0.005
-0.004
-0.005
-0.005
-0.001
-0.004
-0.005
-0.005 6.000
+0.005 -0.005
5.910
-0.005
+0.005 -0.005
* When ordering Type 83 with wear rings please replace the last digit of the part number with 9. eg : Type 83 2.500 x 2.000, without wear rings part number 2122010, with wear rings 2122019 Note : For availability of sizes not listed please consult your local Hallite sales department.
EXTRUSIO N GAP Please note that the figures shown for the extrusion gap F relate to the maximum pe rmissible, worst case situation with the gap a ll on one side . Note also that extrusion is closely linked to pressure and temperature and that in general, the smaller the gap the better the seal performs.
M A XI M UM E X TR U S IO N G AP F
PRESSURE MAXIMUM GAP
ØD
-0.005
-0.004
-0.005
-0.005 5.000
2.321
-0.005
-0.005
1.450
-0.003
-0.005
-0.005 3.500
1.821
-0.005
-0.005
-0.001 -0.003
-0.005
-0.005 3.000
1.321
-0.005
-0.005 2.500
Ød
WITH WEAR RINGS
ØD1 1.500
S
r
p.s.i.
2400
3750
6000
in
0.024
0.020
0.016
Hallite 506 bearing strip is available in three forms:
RANGE
CUT RINGS Ready made bearings, cut to size and to customer specifications, and ready for installation, Hallite 506 bearings have become an industry standard favoured by designers and specifiers alike. Generally produced for the medium to high volume user. SPIRAL LENGTHS Available in a wide range of preformed diameters, spirals are supplied in continuous lengths to suit a range of inside and outside diameters. Ideal for lower volume users requiring various diameters. FLAT COILS Packaged in a dispenser for ease of storage and handling, flat coils are supplied in 10 metre lengths suitable for a wide range of diameters and are ideal for those using or supplying one off bearings for small volume requirements. All standard bearing strip is printed with a size reference and includes distance marking every 100mm on metric size sections and every six inches on inch size sections for guidance only.
Hallite 506 bearing strip provides an extremely effective, hard wearing and easy to use bearing material. Manufactured to very tight tolerances and providing bearing solutions for reciprocating, oscillating and slow rotary movement applications, Hallite 506 bearing strip is used in many of today’s most arduous hydraulic applications around the world. Commonly fitted in reciprocating cylinders as rod and piston bearings, Hallite 506 is capable of withstanding extreme side-loads preventing metal to
FEATURES
•High load capability •Infinite length range •Virtually Zero Swell •Self lubricating •Low friction •Cut to Suit
metal contact. The material’s design incorporates micro indentations on the bearing strip’s surface to trap fluid and provide built-in lubrication to the bearing. The 506 bearing strip is manufactured by a patented process, using a woven fabric reinforced polyester resin material and is proven to be compatible with a wide range of fluids, including mineral oils, water based fluids and phosphate esters, to produce a rectangular section strip which is available in a wide range of inch and metric sizes including cross sections specified in ISO 10766.
All our activities conform to the highest quality assurance systems. Hallite Seals International are fully accredited to ISO 9001 and are approved by many of the world’s foremost OE M s.
S
L1
1.50 2.00 2.00 2.50 2.50 2.50 2.50 2.52 2.50 2.50 2.52 2.77 2.77 2.77 3.00 3.00 3.02 3.20 3.20 3.50 4.00 4.00 4.00 4.00 4.00
5.6 10.0 15.0 5.6 9.7 13.0 15.0 19.5 20.0 25.0 30.0 15.0** 20.0** 25.0** 12.8 20.0 15.0 9.7 19.7 25.0 6.1 9.7 20.0 25.0 30.0
S
L1
0.062 0.125 0.125 0.125 0.125 0.125
0.375 0.375 0.500 0.625 0.750 1.000
metric
‡ ‡ ‡
‡
‡
inch
Within the size range, items suffixed ‡ indicate cross sections to ISO 10766. ** Denotes non standard product. Some sizes, generally thick section bearing strip, are not available in flat coils.
Wear Rings
Hallite 506 INSTALLATION DETAILS WIDTH OF BEARING SPLIT
METRIC
W
INCH
Ød1 / ØD1 Up to 50 Up to 120 Up to 250 Up to 550
W 3.00 - 1.50 5.00 - 3.50 9.00 - 7.25 17.00 - 15.00
Ød1 / ØD1 Up to 2” Up to 5” Up to 10” Up to 22”
W 0.12 - 0.06 0.19 - 0.14 0.35 - 0.29 0.67 - 0.59
Ød1 ØD2 = Ød1 + 2S
Ød1 ØD2 = Ød1 + 2S
ØD3 = Ød1 + G L1
f9 up to : Ø80 H10 above : Ø80 H9 G min / max + 0.2 -0 mm
ØD3 = Ød1 + G L1
f9 up to : 3 ”H 10 above : 3 ”H 9 G min / max + 0.008 -0 in
ØD1 Ød2=ØD1-2S Ød3 = ØD1 + G L1
H11 f9 G min / max + 0.2 -0 mm
ØD1 Ød2=ØD1-2S Ød3 = ØD1 + G L1
H11 f9 G min / max + 0.008 -0 in
HOUSING DETAILS
G min controls the minimum metal to metal contact between the gland and rod or bore and piston. G max controls the maximum extrusion gap seen by a seal associated with the bearing. Typically,G min should be 0.7mm / 0.028” but can be reduced when required by the ex trusion gap for the seal and th e build up of tolera nces. The absolute minimum metal to metal clearance recommended is 0.1mm / 0.0 04” For applications not using a seal G max can be 0.6 x S
ROD
PISTON
L1
G
L1
2
For complete technical specifications contact your local Hallite sales off ice.
0.4 max RAD
G 2
ØD 2
ØD 3 Ød1
0.4 max RAD Ød2
Ød3
ØD 1
Cutting bearing strip to size 1. Select the groove width (L 1 ) and section (S) required. 2. In the case of a rod bearing, position the bearing strip around the rod or in the case of a pist on bearing, place it in the piston g roove and mark the point of overlap. Determine the correct width of bearing split (W) for the Ød or ØD being used, as indicated in the technical details, and make a second mark. 3. Remove the strip and cut at the second marked position to the desired angle using secateurs or other similar cutting tool. It is recommended that the standard cutting angle is used for the majority of applications.
Hallite’s commitment to continuous product development means that specifications may sometimes change without notice.
S S
Bearing split cutting angle STANDARD
w ALTERNATIVE
60°
w
When ordering please clearly state whether cut rings, spiral lengths or flat coils are required. For cut rings and spiral lengths please state whether rod or piston application and provide inside (Ød) or outside (ØD) diameters, groove width (L 1 ) and section (S) dimensions and where spiral lengths are ordered also specify length required. For flat coils please specify g roove width (L1 ) and section (S) dimensions.
Wear Rings
Hallite 533 THE RIG HT CHOIC E
Hallite 533 wear rings are designed for use as piston and rod bearings in hydraulic cylinders. Type 533 wear rings are manufac tured from hea t stabilized 33% glass reinforced 6/6 nylon that provides high impa ct, flexural and comp ression strength. IN STEP WITH VA LUE
Hallite type 533 manufactured wear rings provide cost savings over more labour intensive (machined) wear rings.
1/8" GAP
.120 .125
ADVA NTAGES OF HALLITE 533
L1
G
• MANUFAC TURED TO SIZE. • NO MA C HINING-NO POLLUTION. • MANUFAC TURED TO EXTREMELY •• • C LOSE THICKNESS TOLERANC E. • COST SAVINGS OVER MACHINED • WEAR RINGS. • SUPERIOR C ONTAMINATION • ING ESTION. • WELL PROVEN IN EARTHMOVING • APPLIC ATIONS. • AVAILABLE IN INC H AND M ETRIC • SIZES.
L1
2
max RAD 0.2 mm 0.016 in
G max RAD 0.2 mm 0.016 in ØD2
2
ØD 3 Ød1
Ød2
Ød3 ØD1
S S
TYPICAL PROPERTIES PHENOLIC
BRO N ZE / PTF E
T YPE 533
FLEXURAL S TRENGTH
18500 p.s.i.
N /A
38000 p.s.i.
TENSILE STRENGTH
8000 p.s.i.
2600 p.s.i.
27000 p.s.i.
COMPRESSIVE STRENGTH
24000 p.s.i.
3100 p.s.i.
35000 p.s.i.
All our ac tivities conform to the highest quality assuranc e systems. Hallite Seals International quality management systems are a cc redited to ISO 9001 and a re app roved by many of the world’s foremost OEM’s.
Wear Rings
Hallite 533 metric
ØD 1
Ød 1
L1
PAR T NU M B ER
ØD 1
Ød 1
L1
PA R T NU M B ER
Ø D1
Ø d1
L1
PA R T N UM BE R
45.00
39.00
5.00
F30189
100.00
94.00
8.00
F30245
135.00
128.00
14.80
50.00
43.60
19.00
F30242
100.00
94.00
15.00
F30172
135.00
130.00
7.90
F30315
56.00
50.00
5.00
F30206
100.00
94.00
15.38
F30185
140.00
133.00
35.00
F30298
60.00
53.60
19.00
F30233
100.00
94.00
25.00
F30295
140.00
134.00
15.00
F30175
63.00
55.40
7.50
F30214
105.00
98.64
15.88
F30210
140.00
134.00
20.00
F30202
63.00
57.00
10.00
F30195
105.00
99.00
24.50
F30296
140.00
135.00
7.90
F30314
70.00
62.40
7.50
F30213
110.00
104.00
15.00
F30173
145.00
138.00
14.80
F30318
70.00
64.00
10.00
F30190
110.00
104.00
25.00
F30297
150.00
143.00
14.80
F30317
70.00
64.00
10.38
F30182
110.00
105.00
7.90
F30312
150.00
143.00
35.00
F30299
70.00
65.00
20.00
F30308
115.00
109.00
15.00
F30192
160.00
153.00
40.00
F30300
80.00
70.40
7.50
F30215
115.00
109.00
15.38
F30186
160.00
154.00
15.00
F30176
80.00
74.00
10.00
F30170
115.00
110.00
7.90
F30311
160.00
154.00
20.00
F30203
80.00
74.00
10.38
F30183
115.00
110.00
9.50
F30313
180.00
172.00
45.00
F30320
90.00
80.40
7.50
F30216
120.00
115.00
7.90
F30310
180.00
174.00
20.00
F30204
90.00
82.40
7.50
F30225
125.00
119.00
20.00
F30174
190.00
182.00
45.00
F30301
90.00
84.00
15.00
F30171
125.00
120.00
7.90
F30309
200.00
192.00
22.00
F30321
90.00
84.00
15.38
F30184
130.00
103.00
30.00
F30323
200.00
192.00
45.00
F30322
90.00
84.00
24.50
F30293
130.00
125.00
7.90
F30316
200.00
194.00
20.00
F30324
90.00
84.00
25.00
F30294
ØD1
Ød 1
L1
PAR T N U M BER
F30319
inch
ØD 1
Ød 1
L1
PA RT NU M B ER
ØD1
Ø d1
L1
PA R T N UM BE R
1.250
1.062
0.187
F30001
3.250
2.875
0.500
F30263
5.000
4.750
0.750
F30129
1.250
1.100
0.250
F30009
3.250
3.000
0.250
F30207
5.000
4.750
1.000
F30169
1.375
1.250
0.500
F30303
3.250
3.000
0.312
F30259
5.250
5.000
0.500
F30131
1.500
1.250
0.250
F30005
3.250
3.000
0.375
F30069
5.250
5.000
0.625
F30132
1.500
1.250
0.375
F30006
3.250
3.000
0.500
F30070
5.250
5.000
0.750
F30133
1.500
1.250
0.500
F30305
3.250
3.000
0.625
F30287
5.250
5.000
1.000
F30269 F30135
1.500
1.313
0.187
F30004
3.250
3.000
0.750
F30072
5.500
5.250
0.375
1.750
1.500
0.190
F30234
3.250
3.000
1.000
F30074
5.500
5.250
0.500
F30136
1.750
1.500
0.375
F30201
3.500
3.125
0.500
F20176
5.500
5.250
0.625
F30138
1.750
1.500
0.500
F30013
3.500
3.125
1.000
F20177
5.500
5.250
0.750
F30140
1.875
1.625
0.190
F30179
3.500
3.250
0.250
F30079
5.500
5.250
1.000
F30141
1.875
1.625
0.375
F30235
3.500
3.250
0.312
F30255
5.750
5.500
0.750
F30143
1.875
1.625
0.500
F30306
3.500
3.250
0.375
F30080
5.750
5.500
1.000
F30144 F30145
2.000
1.750
0.187
F40001
3.500
3.250
0.500
F30083
6.000
5.750
0.500
2.000
1.750
0.250
F30018
3.500
3.250
0.625
F30085
6.000
5.750
0.625
F30147
2.000
1.750
0.312
F30020
3.500
3.250
0.750
F30087
6.000
5.750
0.750
F30208
2.000
1.750
0.375
F30022
3.500
3.250
1.000
F30275
6.000
5.750
1.000
F30149
2.000
1.750
0.500
F30024
3.500
3.312
0.375
F30328
6.250
6.000
0.500
F30279
2.000
1.750
0.750
F30025
3.625
3.375
0.500
F30090
6.250
6.000
0.625
F30151
2.000
1.812
0.375
F30325
3.625
3.375
1.000
F30091
6.250
6.000
0.750
F30152
2.125
1.875
0.375
F20026
3.750
3.500
0.250
F40027
6.250
6.000
1.000
F30153
2.250
2.000
0.187
F40029
3.750
3.500
0.312
F30260
6.500
6.250
0.500
F30154
2.250
2.000
0.250
F30196
3.750
3.500
0.375
F30092
6.500
6.250
0.750
F30199
2.250
2.000
0.312
F30032
3.750
3.500
0.500
F30093
6.500
6.250
1.000
F30157
2.250
2.000
0.375
F30033
3.750
3.500
0.625
F30094
6.750
6.500
1.000
F30276
2.250
2.000
0.500
F30035
3.750
3.500
0.750
F30095
7.000
6.750
0.500
F30158
2.250
2.000
0.625
F30036
4.000
3.625
0.500
F30217
7.000
6.750
0.625
F30159 F30277
2.250
2.000
0.750
F30037
4.000
3.625
1.000
F30218
7.000
6.750
0.750
2.375
2.125
0.500
F30038
4.000
3.750
0.250
F30100
7.000
6.750
1.000
F30160
2.500
2.250
0.187
F30040
4.000
3.750
0.312
F30256
7.250
7.000
0.500
F30281
2.500
2.250
0.250
F30041
4.000
3.750
0.375
F30101
7.250
7.000
0.750
F30284
2.500
2.250
0.312
F30043
4.000
3.750
0.500
F30102
7.250
7.000
1.000
F30289
2.500
2.250
0.375
F30044
4.000
3.750
0.625
F30104
7.500
7.250
0.500
F30162
2.500
2.250
0.500
F30045
4.000
3.750
0.750
F30105
7.500
7.250
0.750
F30165
2.500
2.250
0.625
F30047
4.000
3.750
1.000
F30219
7.500
7.250
1.000
F30166
2.500
2.250
0.750
F30048
4.250
4.000
0.312
F30261
7.750
7.500
0.500
F20160
2.500
2.250
1.000
F30286
4.250
4.000
0.375
F30107
7.750
7.500
1.000
F30247
2.500
2.312
0.375
F30326
4.250
4.000
0.500
F30108
8.000
7.750
1.000
F30231
2.625
2.375
0.375
F20179
4.250
4.000
0.625
F30109
8.250
8.000
1.000
F30248
2.625
2.375
0.625
F30285
4.250
4.000
0.750
F30110
8.500
8.250
0.500
F30168
2.750
2.500
0.250
F30209
4.250
4.000
1.000
F30112
8.500
8.250
1.000
F30246
2.750
2.500
0.375
F30051
4.500
4.250
0.312
F30262
8.750
8.500
1.000
F30249
2.750
2.500
0.500
F30052
4.500
4.250
0.375
F30114
9.000
8.750
1.000
F30230
2.750
2.500
0.625
F30054
4.500
4.250
0.500
F30115
9.250
9.000
1.000
F30253
2.750
2.500
0.750
F30055
4.500
4.250
0.625
F30118
9.500
9.250
1.000
F30254
2.750
2.500
1.000
F30056
4.500
4.250
0.750
F30120
9.750
9.500
1.000
F30250
3.000
2.750
0.250
F30061
4.500
4.250
1.000
F30278
10.000
9.750
1.000
F30221
3.000
2.750
0.312
F30062
4.750
4.500
0.375
F30194
10.250
10.000
1.000
F30258
3.000
2.750
0.375
F30063
4.750
4.500
0.500
F30121
10.500
10.250
1.000
F30257
3.000
2.750
0.500
F30064
4.750
4.500
0.750
F30123
11.000
10.750
1.000
F30222
3.000
2.750
0.625
F30191
4.750
4.500
1.000
F30124
11.500
11.250
1.000
F30252
3.000
2.750
0.750
F30066
5.000
4.750
0.375
F30126
12.000
11.750
1.000
F30223
3.000
2.750
1.000
F30067
5.000
4.750
0.500
F30127
13.000
12.750
1.000
F30224
3.000
2.812
0.375
F30327
5.000
4.750
0.625
F30128
Rod Seal
Hallite 621 Hallite Seals International Limited 130 Oldfield Road, Hampton Middlesex. TW12 2HT Tel : 020 8941 2244 Fax : 020 8783 1669 e-mail:
[email protected]
METRIC MAX. SPEED MAX. TEMPERATURE MAX. PRESSURE
Australia
1.0 m/sec -45°C + 110°C 700 bar
Hallite Seals Australia Pty Limited 1/1 St.James Place Seven Hills, N.S.W. 2147 (PO Box 91) Tel : 02 9 620 7300 Fax : 02 9620 7400 e-mail:
[email protected]
High performance polyurethane "Hythane 181 moulded shell.
Canada
France
Germany Dichtelemente Hallite GmbH Billwerder Ring 17 21035 Hamburg Tel : (040) 73 47 48-0 Fax : (040) 73 47 48 49 e-mail:
[email protected]
Italy Hallite Italia S.r.l. Via Umbria, 33 57017 Stagno - Collesalvetti (Livorno) Italia. Tel : 0 586 943666 Fax : 0586 943700 e-mail:
[email protected]
3.0 ft/sec -50°F + 230°F 10,000 p.s.i. Unique profiled NBR energiser
Hallite Seals (Canada) Limited 83 Galaxy Boulevard. # 41 Etobicoke, Ontario. Canada. M9W 5X6 Tel : (416) 675 2505 Fax : (416) 675 4341 e-mail:
[email protected]
Hallite (France) Limited Z.A. Les Petits Carreaux, 1 Av Des Lys 94385 Bonneuil-sur-marne, Cedex. Tel : 01 43 77 85 50 Fax : 01 43 77 93 93 e-mail:
[email protected]
INCH
Twin lip design Polyac etal a ntiextrusion ring
FEATURES •Heavy duty •High pressure •High shock load •Twin lip design •Low pressure sealing •Increased stability •Long Life
USA Hallite Seals Inc. 3820 Merchant Road Fort Wayne, Indiana. 46818 Tel : (219) 489 0002 Fax : (219) 489 5119 e-mail:
[email protected]
The Hallite 621 rod seal is engineered specifically for demanding applications which are subject to high pressure fluctuations, extreme cyclic shock loadings and arduous operating conditions, such as those experienced in off-highway, earthmoving and construction applications.
The seal features three critical component parts: The main body of the seal, the shell, is manufactured in Hallite's high performance polyurethane Hythane 181 and features the twin lip design. This equips the seal with flexibility for ease of installation and high performance at both low and high temperatures. The integral energiser is moulded in NBR, tailored for use at both low and high temperature. The unique profile forms a mechanical lock with the seal shell and extends the energiser's capability to ensure optimum low pressure sealing. This provides positive retention and maximum responsiveness to the circumferential lips of the shell and helps to eliminate problems caused by negative pressure fluctuations in the housing, due to shock loading. The polyacetal anti-extrusion ring extends the normal pressure range of the twin-lip design and enables the seal to withstand heavy side loads and extreme pressure spikes during operation.
www.hallite.co.uk
All our activities c onfo rm to the highe st qua lity assurance systems. Hallite Seals International qua lity manage ment systems are a cc redited to ISO 9001 and are approved by many of the world’s foremost OEM’s.
Hallite’s commitment to continuous product development means that specifications may sometimes change without notice. Hallite® and Hythane® are registered trademarks of Hallite Seals International Ltd.
F9A20H9A9H
Piston Seal
Hallite 714 Hallite Seals International Limited 130 Oldfield Road, Hampton Middlesex. TW12 2HT Tel : 020 8941 2244 Fax : 020 8783 1669 e-mail:
[email protected]
INCH MAX. SPEED TEMPERATURE RANGE MAX. PRESSURE
Australia Hallite Seals Australia Pty Limited 1/1 St.James Place Seven Hills, N.S.W. 2147 (PO Box 91) Tel : 02 9620 7300 Fax : 02 9620 7400 e-mail:
[email protected]
Canada
6.0 ft/sec -40°F + 230°F 7300 p.s.i.
FEATURES
• Face expands for easy
• Excellent wear &
France
abrasion resistance
Germany
• Static load holding
Thermoplastic
Energiser NBR
• Replaces multiple piston
Italy
effectiveness
Hallite Seals Inc. 3820 Merchant Road Fort Wayne, Indiana. 46818 Tel : (219) 489 0002 Fax : (219) 489 5119 e-mail:
[email protected]
Sealing face
capability
• Increases cylinder
USA
Standard Mate ria ls
• Passes over ports
Dichtelemente Hallite GmbH Billwerder Ring 17 21035 Hamburg Tel : (040) 73 47 48-0 Fax : (040) 73 47 48 49 e-mail:
[email protected]
Hallite Italia S.r.l. Via Umbria, 33 57017 Stagno - Collesalvetti (Livorno) Italia. Tel : 0586 943666 Fax : 0586 943700 e-mail:
[email protected]
2.0 m/sec - 40°C + 110°C 500 bar
installation
Hallite Seals (Canada) Limited 83 Galaxy Boulevard. # 12 Toronto, Ontario. Canada. M9W 6A4 Tel : (416) 675 2505 Fax : (416) 675 4341 e-mail:
[email protected]
Hallite (France) Limited .A. Les Petits Carreaux, 1 Av Des Lys 94385 Bonneuil-sur-marne, Cedex. Tel : 01 43 77 85 50 Fax : 01 43 77 93 93 e-mail:
[email protected]
METRIC
rings
• Ideal for re-phasing cylinders • Ingests contamination • Compact housing
The Hallite 714 is a double acting seal capable of passing over ports. The reinforced, heat stabilised, thermoplastic sealing face, expands and contracts to fill the gap between the piston and the cylinder wall and has a step-cut joint for ease of installation. It will tolerate a considerable extrusion gap, thus reducing the possibility of piston-to-bore contact, and it offers excellent static load holding capability. The square section nitrile rubber energiser responds quickly to pressure changes, providing excellent sealing characteristcs under all pressure conditions.
www.hallite.co.uk
All our activities conform to the highest quality assuranc e systems. Hallite Seals International quality management systems are a cc redited to ISO 9001 and a re app roved by many of the world’s foremost OEM’s.
For further information, including non-standard material options available, please contact your local Hallite Seals sales office. Profiles of actual seals may differ from those illustrated.
Hallite’s commitment to continuous product development means that specifications may sometimes change without notice.
F0A20H010H
Capped T Seal
Hallite 735 Hallite Seals International Limited 130 Oldfield Road, Hampton Middlesex. TW12 2HT Tel : 020 8941 2244 Fax : 020 8783 1669 e-mail:
[email protected]
INCH MAX. SPEED MAX. TEMPERATURE MAX. PRESSURE
Australia Hallite Seals Australia Pty Limited 1/1 St.James Place Seven Hills, N.S.W. 2147 (PO Box 91) Tel : 02 9 620 7300 Fax : 02 9620 7400 e-mail:
[email protected]
Canada Hallite Seals (Canada) Limited 83 Galaxy Boulevard. # 41 Etobicoke, Ontario. Canada. M9W 5X6 Tel : (416) 675 2505 Fax : (416) 675 4341 e-mail:
[email protected]
France Hallite (France) Limited Z.A. Les Petits Carreaux, 1 Av Des Lys 94385 Bonneuil-sur-marne, Cedex. Tel : 01 43 77 85 50 Fax : 01 43 77 93 93 e-mail:
[email protected]
Germany Dichtelemente Hallite GmbH Billwerder Ring 17 21035 Hamburg Tel : (040) 73 47 48-0 Fax : (040) 73 47 48 49 e-mail:
[email protected]
4.5 ft/sec -40°F + 250°F 7500 p.s.i.
FEATURES •High pressure •Heavy duty •PTFE cap ring •Compact design •Low friction •Long life •Range of material options to extend service temperature range
METRIC 1.5 m/sec -40°C + 120°C 500 bar
Stand ard Mate ri als Cap ring Please ensure the correct part number is used for the cap ring required.
PTFE, 40% bronze PTFE, 15 % glass, 5% MoS 2
Energiser NBR
Anti extrusion rings Thermoplastic
Italy Hallite Italia S.r.l. Via Umbria, 33 57017 Stagno - Collesalvetti (Livorno) Italia. Tel : 0 586 943666 Fax : 0586 943700 e-mail:
[email protected]
USA Hallite Seals Inc. 3820 Merchant Road Fort Wayne, Indiana. 46818 Tel : (219) 489 0002 Fax : (219) 489 5119 e-mail:
[email protected]
The Hallite 735 is a compact double acting piston seal assembly designed for one piece pistons and is suitable for low to high pressure, medium to heavy duty applications. The assembly comprises as standard a self-lubricating wear resistant bronze filled or glass / MoS 2 filled PTFE cap ring, which is loaded by a NBR energiser. Thermoplastic split anti-extrusion rings support the seal on both sides and prevent extrusion of the energiser and cap ring. Hallite’s 735 piston seal is designed to be used in a variety of equipment and is particularly suited for use in earthmoving and other off-highway equipment. The range includes seals to suit established North American and Asian housings.
www.hallite.co.uk
All our activities c onfo rm to the highe st qua lity assurance systems. Hallite Seals International qua lity manage ment systems are a cc redited to ISO 9001 and are approved by many of the world’s foremost OEM’s.
For further information, including non-standard material options available, please contact your local Hallite Seals sales office. Profiles of actual seals may differ from those illustrated.
Hallite’s commitment to continuous product development means that specifications may sometimes change without notice.
F9B20H99H
A Century of Seal Technology
Hallite 764
Hallite Seals International Ltd 130 Oldfield Road Hampton Middlesex TW12 2HT T: 020 8941 2244 F: 020 8783 1669 e-mail:
[email protected]
Dual purpose piston seal
Designed to perform in double or single acting cylinder applications. Hallite is a world leader in seal design and manufacture with a century of seal technology experience. The new 764 Seal from Hallite will provide the performance needed in general hydraulic cylinder applications whilst providing both double acting and singl e acting functionality.
www.hallite.com
One seal for both applications helps you, the customer, reduce time and cost.
Hallite 764
Means that only one type of seal for both double and single acting functions, need to be stocked.
Manufactured from "Hallite 361", a flexible thermoplastic polyurethane which is one of the elastomeric materials that bridge the gap between flexible rubber and the more rigid engineering plastics. The result is a material which is tough, durable and ideally suited to hydraulic cylinder applications.
L1
C
20 TO 30 °
The Hallite 764 face profile has been designed to create an efficient piston seal for both double and single acting applications. The low profile contact with the bore of the cylinder at low pressure, minimizes friction and maintains the right level of seal squeeze providing an efficient sealing solution.
19 03
r1
°
S C
Ød1
ØD1
2003
>>
Piston Seals
Hallite METRIC
TECHNICAL DETAILS
INCH
OPERATING CONDITIONS MAXIMUM SPEED TEMPERATURE RANGE MAXIMUM PRESSURE
MAXIMU M EXTR USI ON GAP PRESSURE bar MAXIMUM GAP mm
SURFACE ROUGHNESS DYNAMIC SEALING FACE ØD1 STATIC SEALING FACE Ød1 STATIC HOUSING FACES L 1
1.0 m/sec -40°C + 110°C 350 bar
3.0 ft/sec -40°F + 230°F 5000 p.s.i.
Figures show the maximum permissible gap all on one side using the minimum clearance Ø and maximum bore Ø 100
160
250
3 50
0.6
0 .5
0.4
0.2
µmRa
µmRt
µinCLA
µinRMS
0.1 ÷ 0.4 1.6 max 3.2 max
4 max 10 max 16 max
4 ÷ 16 63 max 125 max
5 ÷ 18 70 max 140 max
CHAMFERS & RADII GROOVE SECTION ≤ S mm MIN CHAMFER C mm MAX FILLET RAD r 1 mm
3. 7 5 2.00 0.40
5.50 2.50 0.80
7.50 5.00 1.20
10.50 5.00 1 . 60
TOLERAN CE
ØD1
Ød1
L1
mm
H9
f8
+0.2 -0
D ESIG N L1
C
20° r1
S C
Ød1
ØD1
30°
The Hallite 764 is a compa ct seal for light to med ium duty hydraulic cylinders. It is a double a cting p iston sea l with single a cting capa bilities. This makes it an excellent choice for double acting applications where minimal dynamic leakage is required. The Hallite 764 co mprises of a tough elastomeric face that is pre-loaded by an O ring. The housing width allows a na rrow width piston to be used, but it is rec ommended that an ad equa te bea ring is mounted on one or both sides of the sea l. Housing dimensions for use with Hallite 87 and 506 bearing strip are given in the installation d eta ils. For further details on bearing strip grooves, please refer to the appropriate data sheets. For full details and ava ilab ility please contact your local Hallite Sales office.
FEATURES
• DO UBLE AC TING SEAL WITH SING LE AC TING C APABILITIES • EXCELLENT WEAR RESISTANC E • HIG H EXTRUSION RESISTANC E MA KES IT IDEAL FO R USE WITH REMO TE WEAR RING S SUC H AS THE HALLITE 506 OR 87 • ADVANCED FACE GEOMETRY PROVIDES ENHANC ED DYNAM IC A ND STATIC SEALING • MORE TOLERANT TO DIRT AND C ONTAM INATION THAN C OMMON PTFE FAC ES • RAPID RECO VERY AFTER ASSEMBLY, NO RESIZING REQUIRED • ISO 7425 HOUSINGS
Wiper Seals
Hallite 860 METAL CASE TREATED WITH A RUST INHIBITOR PRECISION TRIMMED SEALING LIP
FEA TURES
• EASE OF ASSEMBLY • LONG LIFE • PRECISION TRIMMED WIPING LIP • M ETAL CASE TREATED WITH A RUST INHIBITOR • WIDE RANG E OF APPLIC ATION USES • RANG E INC LUDES ISO & J APA NESE STANDARD HOUSINGS.
OPERATING CONDITIONS TEM P E R ATURE RANGE
-30°C + 80°C
-22°F +176°F SURFACE ROUGHNESS
µmRa
µmRt
µin CLA
RMS
DYNAMIC SEALING FACE
Ød1
0.1 to 0.4
4 max
4 to 16
5 to 18
STATIC SEALING FACE
ØD1
1.6 max
10 max
63 max
70 max
L1
3.2 max
16 max
125 max
140 max
STATIC HOUSING FACES
CHAMFERS & RADII mm
ROD DIAMETER
Part numbers suffixed by “† ” are also interc hange ab le with J ap anese housings. NB:
Part numbers suffixed by “‡” indica te ho using sizes to meet ISO6195 type B. MEDIA
Sea ls are suitab le for mineral based hydraulic fluid.
All our ac tivities co nform to the highest quality assurance systems. Hallite Seals International quality mana gement systems are accredited to ISO 9001 and a re approved by many of the world’s foremost OEM’s.
Ød1
up to 19mm above 19mm
MIN CHAMFER
C
0.5
1.0
MAX FILLET RAD
r1
0.4
0.4
CHAMFERS & RADII in
MIN CHAMFER1
C
0.040
MAX FILLET RAD
r1
0.016
DESIG N
The Hallite type 860 is a metal cased wiper, designed to press-fit into op en groove housings. The type 860 comp rises a prec isely trimmed polyurethane wiping element which is securely bonded to a metal case trea ted with a rust inhibitor. C apa ble of ope rating in dirty conditions, the proportions of the polyurethane wiping lip allow it to follow the side movement of the rod and to clear away heavily depo sited dirt. Suitable for light, medium and heavy duty applica tions, the wiper has been designed to provide ease of installation and offers excellent durability in service. The type 860 offers a wide range, including sizes suitable for ISO 6195 type B housings and a range for standard J ap anese housings.
Wiper Seals
Hallite 860 metric
ROD
TOL
H OUSIN G
TOL
HOUSING
OVERALL
PART
DIA
f9
DIA
H8
LENGTH L 1
LE NG TH
N UM BE R
TOL+0.5 - 0
L2
Ød 1
ØD 1
L1 C
30°
15
-0.016 -0.059
25
+0.033 +0.000
5.0
7.0
6950000
16
-0.016 -0.059
22
+0.033 +0.000
3.0
4.0
6950010
18
-0.016 -0.059
28
+0.033 +0.000
5.0
7.0
6950020
20
-0.020 -0.072
30
+0.033 +0.000
5.0
8.0
6950030
25
-0.020 -0.072
35
+0.039 +0.000
5.0
8.0
6950040
25
-0.020 -0.072
37
+0.039 +0.000
6.0
9.0
6950050†
28
-0.020 -0.072
38
+0.039 +0.000
5.0
8.0
6950060
Ød 1
30
-0.020 -0.072
40
+0.039 +0.000
5.0
8.0
6950070
75
-0.030 -0.104
89
+0.054 +0.000
8.0
11.0
6950270†
30
-0.020 -0.072
42
+0.039 +0.000
6.0
9.0
6950080†
80
-0.030 -0.104
90
+0.054 +0.000
7.0
10.0
6950280‡
32
-0.025 -0.087
42
+0.039 +0.000
5.0
8.0
6950090
80
-0.030 -0.104
94
+0.054 +0.000
8.0
11.0
6950290†
35
-0.025 -0.087
45
+0.039 +0.000
7.0
10.0
6950100
85
-0.036 -0.123
95
+0.054 +0.000
7.0
10.0
6950300
35
-0.025 -0.087
47
+0.039 +0.000
7.0
10.0
6950110†
85
-0.036 -0.123
99
+0.054 +0.000
8.0
11.0
6950310†
40
-0.025 -0.087
50
+0.039 +0.000
7.0
10.0
6950120‡
90
-0.036 -0.123
100
+0.054 +0.000
7.0
10.0
6950320‡
40
-0.025 -0.087
52
+0.046 +0.000
7.0
10.0
6950130†
90
-0.036 -0.123
104
+0.054 +0.000
8.0
11.0
6950330†
45
-0.025 -0.087
55
+0.046 +0.000
7.0
10.0
6950140‡
95
-0.036 -0.123
109
+0.054 +0.000
8.0
11.0
6950340†
45
-0.025 -0.087
57
+0.046 +0.000
7.0
10.0
6950150†
100
-0.036 -0.123
110
+0.054 +0.000
7.0
10.0
6950350
50
-0.025 -0.087
60
+0.046 +0.000
7.0
10.0
6950160‡
100
-0.036 -0.123
114
+0.054 +0.000
8.0
11.0
6950360†
50
-0.025 -0.087
62
+0.046 +0.000
7.0
10.0
6950170†
105
-0.036 -0.123
121
+0.063 +0.000
9.0
12.0
6950370†
55
-0.030 -0.104
65
+0.046 +0.000
7.0
10.0
6950180
110
-0.036 -0.123
120
+0.054 +0.000
7.0
10.0
6950380
55
-0.030 -0.104
69
+0.046 +0.000
8.0
11.0
6950190†
110
-0.036 -0.123
126
+0.063 +0.000
9.0
12.0
6950390†
60
-0.030 -0.104
70
+0.046 +0.000
7.0
10.0
6950200
115
-0.036 -0.123
131
+0.063 +0.000
9.0
12.0
6950400†
60
-0.030 -0.104
74
+0.046 +0.000
8.0
11.0
6950210†
120
-0.036 -0.123
130
+0.063 +0.000
7.0
10.0
6950410
65
-0.030 -0.104
75
+0.046 +0.000
7.0
10.0
6950220
120
-0.036 -0.123
136
+0.063 +0.000
9.0
12.0
6950420†
65
-0.030 -0.104
79
+0.046 +0.000
8.0
11.0
6950230†
130
-0.043 -0.143
146
+0.063 +0.000
9.0
12.0
6950430†
70
-0.030 -0.104
80
+0.046 +0.000
7.0
10.0
6950240‡
140
-0.043 -0.143
160
+0.063 +0.000
10.0
14.0
6950440†
70
-0.030 -0.104
84
+0.054 +0.000
8.0
11.0
6950250†
150
-0.043 -0.143
170
+0.063 +0.000
10.0
14.0
6950450†
75
-0.030 -0.104
85
+0.054 +0.000
7.0
10.0
6950260
160
-0.043 -0.143
180
+0.063 +0.000
10.0
14.0
6950460†
r1
ØD1
Ød1
L2
ROD
TOL
HOUSING
TO L
H OUSING
OVERALL
PART
DIA
f9
DIA
H8
LENGTH L 1 TOL+0.5 - 0
LE NG TH
N UM BE R
ØD 1
L2
Wiper Seals
Hallite 862
METAL CASE TREATED WITH A RUST INHIBITOR PRECISION TRIMMED SEALING LIP
FEATURES
• EASE OF A SSEMBLY • LONG LIFE • PRECISION TRIMMED WIPING LIP • M ETAL CASE TREATED WITH A RUST INHIBITOR • WIDE RANG E OF APPLICATION USES MEDIA Seals are suitable for mineral based hydraulic fluids.
OPERATING CONDITIONS T E MPERATURE RANGE
-30°C + 80°C
-22°F +176°F SU RFACE ROUGHNESS
µmRa
µmRt
µin CLA
RMS
DYNAMIC SEALING FACE
Ød1
0.1 to 0.4
4 max
4 to 16
5 to 18
STATIC SEALING FACE
ØD1
1.6 max
10 max
63 max
70 max
L1
3.2 max
16 max
125 max
140 max
STATIC HOUSING FACES
CHAMFERS & RADII mm
ROD DIAMETER
Ød1
up to 19mm
up to 80mm
above 80mm
MIN CHAMFER
C
0.5
1.0
1. 5
MAX FILLET RAD
r1
0.4
0 .4
0.4
MIN CHAMFER1
C
0.040
MAX FILLET RAD
r1
0.016
CHAMFERS & RADII in
DESIG N
All our ac tivities co nform to the highest qua lity assuranc e systems. Hallite Seals International quality mana gement systems are accredited to ISO 9001 and are approved by many of the world’s foremost OEM’s.
The Hallite type 862 is a metal ca sed wiper, designed to press-fit into op en groove housings. The type 862 comp rises a prec isely trimmed polyurethane wiping element which is securely bonded to a metal case trea ted with a rust inhibitor. C apa ble of ope rating in dirty conditions, the proportions of the polyurethane wiping lip allow it to follow the side movement of the rod and to clear away heavily depo sited dirt. Suitable for light, medium and hea vy duty applica tions, the wiper has been designed to provide ease of installation and offers excellent durability in service. The type 862 offers a range of sizes suitable for standard American inch housings.
Wiper Seals
Hallite 862 inch L1 C
30°
r1
ØD1
ROD
TOL
D IA
f9
Ød 1 0. 625
H OUSING
T OL
HO USING
TO L
PART
DIA
H8
LENG TH L 1
NUMBER
ØD 1 - 0. 0006
1. 125
-0.0023 0. 750
- 0. 0008
1. 250
1. 000
- 0. 0008
1. 125
- 0. 0008
1. 500
- 0. 0010
1. 625
1. 750
-0. 0010 -0.0034
1. 500
- 0. 0010
- 0. 0010
2. 000
2. 125
- 0. 0010
2. 000
- 0. 0012
2. 250
- 0. 0012
2. 500
2. 750
-0. 0012
2. 750
- 0. 001 2 -0.0041
+ 0. 0016
0. 313
+0. 001 6
+ 0. 0016
+ 0. 0018
+ 0. 0018
+ 0. 0018
+ 0. 0018
+ 0. 0018
3. 000
+0. 0018
0. 313
+ 0. 0022 +0.0000
6960000
3. 000
+ 0. 020
+ 0. 020
+ 0. 020
+ 0. 020
0. 313
+0. 020
6960010
3. 250
+ 0. 020
6960020
3. 250
+0 .020
6960030
3. 500
+ 0. 020
69600 40
3. 500
+ 0. 020
6960050
3. 750
+ 0. 020
69 60060
4. 000
+ 0. 020
6960070
4. 00 0
+ 0. 020 -0.000
L ENGTH L 1
NUMBER
-0. 0012
+ 0. 0022
0. 313
3. 50 0
- 0. 0014
+0.0000 3. 750
- 0. 0014
- 0. 0014
- 0. 0014
-0. 0014
- 0. 0014
-0. 00 14
6960080
4. 000
- 0. 0014
3. 875
4. 500
- 0. 0014
4. 000
4. 500
- 0. 0014
4. 125
5. 000
- 0. 0016
4. 375
5. 000
- 0. 0016 -0.0056
+ 0. 0022
+0. 002 2
+ 0. 0022
4. 625
+0. 0022
0. 313
+ 0. 0025
0. 313
+ 0. 0025
0. 313
+ 0. 0025
0. 313
+ 0. 0025
0. 313
+0. 0025
0. 50 0
+ 0. 0025 +0.0000
+ 0. 020
6960170
+ 0. 020
6960180
+ 0. 020
696019 0
+0. 020
6960200
+ 0. 020
6 960210
-0.000 0. 313
+0. 020
6960220
-0.000 0 .500
+ 0. 020
6960230
-0.000 0. 313
+0.0000 6. 000
6960160
-0.000
+0.0000 5. 625
+ 0. 020
-0.000
+0.0000 5. 500
6960150
-0.000
+0.0000 5. 125
+0 .020
-0.000
+0.0000 5. 000
6960140
-0.000
+0.0000 4. 750
+ 0. 020
-0.000
+0.0000
-0.0056 6960120
0. 313
+0.0000
-0.0048 6960110
+ 0. 0022
6960130
-0.000
+0.0000
-0.0048 6960100
0 .313
+0.0000
-0.0048 6960090
+ 0. 0022
+0. 020 -0.000
+0.0000
-0.0048
-0.000 0. 313
H8
-0.0048
-0.000 0. 313
DIA ØD 1
-0.0048
-0.000 0. 313
PART
-0.0048
-0.000 0. 313
TOL
-0.0048
-0.000 0. 313
HOU SIN G
-0.0048
-0.000 0. 313
T OL
-0.0048
-0.000 0. 313
H OUSING
-0.0041
-0.000
+0.0000 3. 250
+ 0. 020
-0.000
+0.0000
-0.0041
f9
-0.000
+0.0000
-0.0041 2. 500
0. 313
+0.0000
-0.0041 2. 250
+ 0. 0016
+0.0000
-0.0034
DIA
-0.000
+0.0000
-0.0034 1. 750
0. 313
+0.0000
-0.0034 1. 625
+ 0. 0016
+0.0000 1. 875
TO L
-0.000
+0.0000
-0.0034 1. 375
0. 313
+0.0000
-0.0028 1. 250
+ 0. 0012
+0.0000
-0.0028
R OD Ød 1
+0.0000
-0.0028
Ød1
+ 0. 020
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Hallite Seals
16 / 416
Filled PTFE rod buffer seals; low friction and simple groove design, used to protect the primary rod seal from pressure spikes.
38
A tough, abrasion resistant rod wiper incorporating pressure relief ribs, an outside lip for effective sealing of housing and a precision trimmed wiping lip.
88
A filled PTFE ring to protect piston seals and bearings from dieseling and ingression of contaminants.
506
A resilient all round bearing ring manufactured using woven fabric reinforced polyester, capable of withstanding extreme side loads.
520
A polyurethane rod wiper incorporating pressure relief ribs, an outside lip for effective sealing of housing and precision trimmed wiping lip.
533
A tough glass filled nylon bearing.ring for piston and rod applications.
601
A general purpose seal for rod and piston, manufactured in Hythane 181, hard wearing and flexible for easy installation. Can also be used with back ups for higher pressures.
605
A superlative dry rod seal with twin lip design, manufactured in Hythane 181, easy to install and designed for demanding applications.
606
An asymmetric piston seal manufactured in Hythane 181. A very flexible, hard wearing seal used in back to back sealing arrangement for double acting applications.
621
The top of the range twin lip rod seal is manufactured in Hythane 181; with unique profiled rubber energiser and acetal anti-extrusion ring to withstand high pressures and shock loads, the seal provides complete lip actuation under all pressure conditions.
653
A heavy duty rod buffer seal manufactured in Hythane 181. Unique patented design protects the primary rod seal from pressure spikes and is designed to prevent inter-seal pressure build up. The seal is interchangeable with popular PTFE designs.
730
A high pressure, heavy duty, double acting piston seal with a tough wear resistant TPE face , two thermoplastic anti-extrusion rings and rubber energiser. A proven and reliable design commonly used in heavy duty equipment.
735
A high pressure, heavy duty, low friction double acting piston seal with a filled PTFE cap ring, two thermoplastic anti-extrusion rings and rubber energiser. A compact and reliable design commonly used in off-highway and other mobile equipment.
860 / 862
Press fit metal cased rod wipers incorporating a precision trimmed polyurethane wiping lip and a metal case treated with a rust inhibitor for longer life.
SRB / SRS
A low friction PTFE buffer seal, used to protect the primary rod seal from pressure spikes. SRB incorporates thermoplastic back up ring for severe applications Hallite’s commitment to product development means that specifications may change without notice.
Sealing Systems for Off-highway Equipment The Gland
Wipers 38
520
860
862
Rod Seals 605
621
Gland Bearings 533
506
Buffer Seals 16
416
653
SRS
SRB
Off-highway Within the off-highway sector, there is an ever increasing demand on equipment manufacturers for their products to perform a variety of different functions: excavating, digging, loading, shovelling, lifting, stacking; the list is endless. Performing in severe working environments where contamination from internal and external sources is often present, off-highway equipment is highly stressed and is subjected to heavy side loads and regular pressure peaks. Working in a wide range of temperatures, the equipment is required to be highly productive and easily maintained and repaired. Hallite Seals offer the range and scope of products necessary for this demanding global industry.
The Piston
Anti-Dieseling Rings 88
Piston Seals 730
735
606
601
Piston Bearings 533
506 All our activities conform to the highest quality assurance systems. Hallite Seals International are accredited to ISO 9001 and are approved by many of the worlds foremost O.E.M.s
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Sealing arrangements shown illustrate popular global designs. Always seek advice about your specific application.
