Buna 70-145-Black-Pk50

This o-ring is supplied in AS568-145 black Buna-N (Nitrile) 70 Shore A measuring an inside diameter of 2.55 in (64.77 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 2.756 in (70 mm), catalogued under part number SB-H70145-50. It remains the most cost-effective sealing element available for pressurized assemblies. Source specification: 2.75IDX2.5625"ODX.0938"CS.

The material holds up against greases and lubricants, propane and butane, and many alcohols. Buna-N (Nitrile) is valued for reliable performance in both static and dynamic service, strong abrasion and tear resistance. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where automotive brake fluid or polar solvents are present.

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

SB-H70145-50 ships by the bag. Nominal inside diameter is listed as 2 9/16 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.