FAB PISTON CUP 4 OD X 5/8 X 5/32

K401-500 is a Buna-N (Nitrile) U-Cup Seal supplied with a 5/8 in inside diameter, a 4 in outside diameter, and a height of 5/32 in. In service, this u-cup seal seals more effectively as system pressure increases, without added squeeze at rest. This item is further identified as With 1/2 ID Hole IN Center.

Buna-N (Nitrile) is specified here for most widely specified general-purpose sealing elastomer, strong abrasion and tear resistance. Expect good resistance to hydraulic fluids, petroleum-based oils, and many alcohols. Exposure to automotive brake fluid or strong acids will shorten service life.

You will find this material specified across general industrial maintenance, hydraulic and pneumatic systems, and fluid power.

Reference part number K401-500 when ordering; the item is sold individually. Check the compound against your process media, pressure and temperature before committing to a design.