A robust assembly specifically designed for integral pistons, the double-acting seal is a highly wear-resistant, field-proven rubber seal that performs most effectively in a wide range of medium-duty applications. element is used. The seal is also suitable for two-piece pistons.

The assembly includes a rubber seal, two split backup rings, and two split bearings (one on each side of the seal).

Nitrile rubber seals are designed so that their parts are compressed by the housing to provide a low pressure seal and are protected from extrusion damage by the expanding lip of the backup ring when pressurized. The backup ring is machined from a tough, flexible polymer and is shanked for assembly.