8400 SERIES BUNA CUP 2-1/8X 2-1/2X 3/16W

APG stocks the NU8406-0212, a Buna-N (Nitrile) U-Cup U-Cup Seal with a 2-1/8 inch inside diameter, a 2-1/2 inch outside diameter, and a height of 3/16 inch. An u-cup seal provides low breakaway friction with strong sealing under load.

The compound resists petroleum-based oils, hydraulic fluids, and propane and butane. Buna-N (Nitrile) is known for strong abrasion and tear resistance, low compression set under sustained load. Exposure to automotive brake fluid or polar solvents will shorten service life.

You will find this material specified across hydraulic and pneumatic systems, agricultural equipment, and construction equipment.

This item is sold individually under part number NU8406-0212. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.