Claron Style GPE is designed for use as a single acting piston seal. The seal is a precision moulded Nitrile rubber sealing element with a proportional bonded reinforced fabric base, and an acetal back up ring to resist extrusion. The acetal anti- extrusion ring allows larger clearances and higher pressures. Style GPE is designed to provide effective low pressure sealing through distortion of the lips rather than “squeeze”. This gives an improved response to pressure variations and reduces low pressure stiction to ensure a smoother return stroke. The seal is designed with initial radial interferance to effect low pressure sealing. The rubberised fabric header has the advantage of retaining fluid within its surface thus reducing both friction and wear. Style GPE is an effective seal over a wide range of applications.
These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps. Refer to Appendix 1 for further information.
|DIN||Hydraulic Fluid Description||°C|
|H||Mineral oil without additives||100|
|H-L||Mineral Fluid with anti corrosion and anti ageing additives||100|
|H-LP||Mineral oil as HL plus additives reducing wear, raising load||100|
|H-LPD||Mineral oil as H-LP but with detergents and dispersants||100|
|H-V||Mineral oil as H-LP plus improved viscosity temp.||100|
|HFA E||Emulsions of mineral oil in water. Water content 80-95%||55|
|HFA S||Synthetic oil in water. Water content 80-95%||55|
|HFB||Emulsions of water in mineral oil. Water content 40%||60|
|HFC||Aqueous polymer solutions. Water content 35%||60|
|HFD R||Phosphoric acid ester based||NS|
|HFD S||Chlorinated hydrocarbon based||NS|
|HFD T||Mixtures of HFD R and HFD S||NS|
|HETG||Vegetable Oil based||60|
|HEES||Fully synthetic ester based||NS|
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.
Style GPE is designed to be fitted onto a split piston and may be used with Claron Style PSR retainer. 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.
H10 js11 +0.025 Nominal sec. Min chamf Max