FAB PISTON CUP 2 1/2 OD X 1/2 X 1/8

The K250-375 is a Buna-N (Nitrile) U-Cup Seal supplied with a 1/2 in inside diameter, a 2-1/2 in outside diameter, and a height of 1/8 in. This u-cup seal delivers pressure-energized single-acting sealing on rods and pistons. The catalog record notes: With 3/8 ID Hole IN Center.

This material stands up to propane and butane, petroleum-based oils, and water. That behavior comes from the compound itself: Buna-N (Nitrile) is specified for reliable performance in both static and dynamic service, strong abrasion and tear resistance.

You will find this material specified across fluid power, automotive, and hydraulic and pneumatic systems.

Stocked as K250-375 and sold individually. Application requirements vary, so validate compatibility with your process conditions prior to installation. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.