Buna 70-137-Black-Pk100

Ordered as SB-H70137-100, this is an AS568-137 black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 2.05 in (52.07 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 2.256 in (57.3 mm). The o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces. Additional detail on this item: 2.25IDX2.0625"ODX.0938"CS.

As a material, Buna-N (Nitrile) is specified for an economical choice for high-volume maintenance programs and the most widely specified general-purpose sealing elastomer. The compound resists water, greases and lubricants, and many alcohols. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Applications involving strong acids or ketones call for a different compound.

It sees regular use in fluid power, automotive, and agricultural equipment.

Stocked as SB-H70137-100 and sold by the bag. Nominal inside diameter is listed as 2 1/16 inch. Review your operating media and conditions against this specification before installation.