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Designed for use on split/2-piece pistons, the KB17 is a double acting/bi-directional piston seal comprising of a central sealing element and precision machined thermoplastic guide rings.
These rings allow higher working pressures and larger clearance gaps between the hardware components.

The central sealing element provides initial radial compression upon installation to provide low pressure sealing and when subjected to system pressure the seal energises to provide further compressive force and leak tightness. While offering extrusion resistance the guide rings also support and centralise the piston head while reciprocating in the hydraulic cylinder and help prevent metal to metal contact under side load conditions

KB17 is commonly used in British agricultural machinery and hydraulic cylinders found in the steel industry.

This seal is available in almost all of our materials and can be optimized to suit particular applications.