Buna 70-038-Black-Pk100

The SB-H70038-100 is an AS568-038 black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 2.614 in (66.4 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 2.754 in (69.95 mm). This o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces. Additional detail on this item: 2.75IDX2.625"ODX.0625"CS.

The compound resists propane and butane, hydraulic fluids, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) is valued for an economical choice for high-volume maintenance programs and the most widely specified general-purpose sealing elastomer. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Applications involving ozone and direct sunlight or automotive brake fluid call for a different compound.

Typical settings include fluid power, general industrial maintenance, and hydraulic and pneumatic systems.

Stocked as SB-H70038-100 and sold by the bag. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.