Buna 70-227-Black-Pk100

This o-ring is supplied in AS568-227 black Buna-N (Nitrile) 70 Shore A with an inside diameter of 2.109 in (53.57 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 2.387 in (60.63 mm), catalogued under part number SB-H70227-100. It creates a positive seal at flange, piston and rod interfaces without added hardware. Supplementary detail from the product record: 2.375IDX2.125"ODX.125"CS.

The compound resists water, many alcohols, and greases and lubricants. That behavior comes from the compound itself: Buna-N (Nitrile) offers the most widely specified general-purpose sealing elastomer and an economical choice for high-volume maintenance programs. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It is not the right choice where ozone and direct sunlight or automotive brake fluid are present.

Typical settings include hydraulic and pneumatic systems, agricultural equipment, and general industrial maintenance.

Stocked as SB-H70227-100 and sold by the bag. Nominal inside diameter is listed as 2 1/8 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.