Buna 70-220-Black-Pk10

Part number SB-H70220-10 is an AS568-220 black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 1.359 in (34.52 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 1.637 in (41.58 mm). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware. Supplementary detail from the product record: 1.625IDX1.375"ODX.125"CS.

The material holds up against water, greases and lubricants, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) is widely chosen for low compression set under sustained load, reliable performance in both static and dynamic service. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C).

It sees regular use in general industrial maintenance, construction equipment, and hydraulic and pneumatic systems.

SB-H70220-10 ships by the bag. Nominal inside diameter is listed as 1 3/8 inch. Review your operating media and conditions against this specification before installation.