Double acting NBR rubberised fabric piston seal incorporating POM anti-extrusion header.

- Design -

Claron Style SFD is a single acting piston seal which may also be arranged back to back in pairs to form a double acting piston assembly. The sealing element is manufactured from fabric reinforced Nitrile Rubber with either an Acetal or fabric reinforced Header ring. The seal assembly forms a highly robust unit resistant to shock loads and high pressures typically found in mobile plant equipment.

- Operating Conditions -

Maximum Pressure

Max Speed
Temp. Range
-30°C to 100°C
400 Bar
600 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 SFD is designed to fit back to back on a split piston. 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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