FAB PISTON CUP 3 1/2 OD X 5/8 X 5/32

Part number K350 is a Buna-N (Nitrile) U-Cup U-Cup Seal supplied with a 5/8 inch inside diameter, a 3-1/2 inch outside diameter, and a height of 5/32 inch. An u-cup seal delivers pressure-energized single-acting sealing on rods and pistons.

This material stands up to many alcohols, petroleum-based oils, and greases and lubricants. That behavior comes from the compound itself: Buna-N (Nitrile) delivers strong abrasion and tear resistance, reliable performance in both static and dynamic service.

Maintenance and OEM teams specify it across general industrial maintenance, automotive, and hydraulic and pneumatic systems.

K350 ships individually. As always, verify media compatibility and operating conditions against the requirements of your specific application. For a size or compound outside the standard catalog, APG can quote from a print or sample.