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Designed for use on one-piece solid pistons the KB09E is a 6-piece double acting/bi-directional heavy-duty piston seal.

The seal is commonly used in large diameter, long-stroke applications that have high bearing loads and require larger clearance gaps between the hardware components to prevent metal-to-metal contact.

The central sealing element is energised by the elastomer ring which provides initial radial compression upon installation to provide low pressure sealing, 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

The KB09A can be offered in several material combinations for use in high temperatures and/or to provide enhanced chemical resistance.