Designed for use on one piece pistons. The seal consists of a precision moulded high performance 98°Shore Polyurethane outer sleeve, pre loaded and pressure energised by a square section NBR 80°Shore rubber element. The compact design allows smaller width pistons to be used. The seal offers excellent wear resistance on a wide range of surface finishes. Sizes conform to standard Japanese housings.
|Max Speed Temp. Range Temp. Range|
|m/s -30°C to 80°C -30°C to 100°C|
|1.0 280 Bar 250 Bar
0.5 450 Bar 400 Bar
|Polyurethane / Nitrile Composite|
|DIN||Hydraulic Fluid Description||°C|
|H||Mineral oil without additives||100|
|H- L||Mineral Fl uid with anti corrosion and anti ageing additives||100|
|H-LP||Mineral oil as HL plus additives reducing wear, r aising load||100|
|H-LPD||Mi ner al oil as H-LP but with detergents and dispersants||100|
|H- V||Mineral oil as H-LP pl us impr oved viscosity temp.||100|
|HFA E||Emulsions of mineral oil in water. Water content 80-95%||40|
|HFA S||Synthetic oil in water. Water content 80-95%||40|
|HFB||Emulsions of water in miner al oil. Water content 40%||40|
|HFC||Aqueous polymer solutions. Water content 35%||NS|
|HFD R||Phosphoric acid ester based||NS|
|HFD S||Chlorinated hydrocar bon based||NS|
|HFD T||Mixtures of HFD R and HFD S||NS|
|HETG||Vegetable Oil based||60|
|HEES||Fully synthetic ester based||NS|
These range perameters are Maximum simultaneous conditions. ptimum service conditions are affected by temperature, speed, ressure, surface finish and extrusion gaps.
efer to Appendix 1 for further information.
Note: Clearance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of -30°C to 100°C
The use of a suitably selected Claron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal
For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to Appendix 4 for value of tolerance symbols.
For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to Appendix 3.