Single acting NBR piston seal with rubberised fabric reinforcement & clip on POM bearing ring.

- Design -

Designed for use on split pistons, the seal is a precision moulded rubber element with a reinforced fabric base. The seal is fitted with Polyacetal anti-extrusion wear rings on the O.D. to allow larger machining clearances between the piston head and cylinder bore, and to permit higher working pressures. The seal is designed with sufficient radial sectional interference that on complete assembly low pressure sealing is effected. The supporting rubberised fabric has the capability of retaining the sealing media thus assisting in reducing friction and wear. Style PW has proven to be effective over a wide range of applications.

- Operating Conditions -

Maximum Pressure

Max Speed
Temp. Range
-30°C to 100°C
250 Bar
400 Bar
These range perameters are Maximum simultaneous conditions.
Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps.

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.

- Housing -

For surface finish and recommended lead in chamfers refer the illustration below. For housing dimensions and machining tolerances refer to the table of recommended sizes and Tolerance Tables for value of tolerence symbols

- Fitting -

Style PW is designed to be fitted onto a split piston and may be used with Claron seal retainer Style PSR. For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For details refer to Seal Installation

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