FAB PISTON CUP 4" OD X 1/2" X 3/16"

This u-cup seal is supplied in Buna-N (Nitrile) built to a 4 in outside diameter, catalogued under part number K404. It seals more effectively as system pressure increases, without added squeeze at rest.

As a material, Buna-N (Nitrile) delivers an economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. This material stands up to many alcohols, propane and butane, and greases and lubricants.

It sees regular use in agricultural equipment, fluid power, and automotive.

Stocked as K404 and sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.