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A compact, double‑acting seal for piston heads.
Our Lionsele P has been especially developed to provide optimum sealing capability in conjunction with the lowest possible levels of dynamic and breakout friction.
The seal comprises a PTFE sleeve supported by a rectangular elastomeric energiser. The energiser distributes an even sealing load to the PTFE sleeve (unlike similar products that incorporate O-rings) to help minimise leakage.
In operation, the intimate face-to-face contact prevents the sleeve twisting or rocking in the housing. This provides stable fluid film conditions with consistently low friction values.
The sleeve controls leakage by recovering the maximum possible amount of residual fluid film deposited on the cylinder bore. Its chamfered leading edges assist with fluid film recovery, and also reduce the risk of seal damage through extrusion.
Any duties where instant response and low power consumption are required. It is particularly recommended for high frequency/short stroke applications where there is a high risk of unstable fluid film conditions. Examples include: hydraulic cylinders, actuators, servomechanisms, machine tools, measuring instruments, gauge control equipment and earth moving plant.
PTFE sleeve
Rectangular energiser
Standard materials
Suitable for use with most mineral based hydraulic fluids, and most fire-resistant fluids of the water/oil or water/glycol types at temperatures up to 120°C (248°F). Also resistant to air, water and most lubricating oils and greases. Where fire-resistant fluids are used, it is essential to advise our Technical Support Team of the type and designation due the the effects that can occur with different grades.
Special materials
Considerably extend the range of application in terms of temperature, fluid compatibility and abrasion resistance. Please contact us for further information.
Available in standard materials and sizes to suit housings to BS ISO 7425-1. Seals to other sizes or in special materials are manufactured to order. Fitting instructions are supplied with every seal.
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