Double acting NBR energised Glass filled PTFE piston seal for one piece pistons.

- Design -

Claron composite seals Style CSPG are designed as high pressure, Low Friction Double-Acting Piston Seals for use in heavy duty hydraulic cylinders as found in mobile equipment to American designs.

- Materials -

Claron Style CSPG consists of a glass filled high performance P.T.F.E. sealing eliment, energised by a precision moulded rectangular section NBR rubber.

- Operating Range -

Temp -40°C to 120°C
Pressure upto 800 bar
Velocity upto 15m/s
These range parameters are maximum conditional values.
Optimum service conditions are affected by temperature, speed,pressure, surface finish and extrusion gaps. Refer to Appendix 1 for further information.

- Operating Conditions -

Maximum Pressure

Temp. Range
Temp. Range
-30°C to 80°C
80°C to 120°C
800 Bar
350 Bar
These range perameters are Maximum simultaneous conditions.
Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps.

Diametrical Clearance F shown in the graph is calculated as the maximum permissible extrusion gap, allowing for movement due to side load, for various pressures and temperatures upto 80°C. This product is intended for use with either STYLE PBR or STYLE BGF Bearing Rings which effectively reduce the Radial clearance to a value nearer to F/2 thus increasing the pressure capability.
The maximum seal extrusion gap should be calculated allowing for all tolerances, movement and cylinder expansion.
For pressures > 400 bar, the seal extrusion gap should be reduced by utilising smaller tolerances. e.g H8 for Cylinder bore, f8 for piston diameter either side 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 -

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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