Buna 70-205-Black-Pk100

APG stocks the SB-H70205-100, an AS568-205 black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 0.421 in (10.69 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 0.699 in (17.75 mm). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware. Supplementary detail from the product record:0.6875IDX.4375"ODX.125"CS.

It resists greases and lubricants, many alcohols, and hydraulic fluids. Buna-N (Nitrile) is specified for the most widely specified general-purpose sealing elastomer and low compression set under sustained load. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Applications involving strong acids or ozone and direct sunlight call for a different compound.

Common environments for this compound include hydraulic and pneumatic systems, automotive, and general industrial maintenance.

Stocked as SB-H70205-100 and sold by the bag. As always, verify media compatibility and operating conditions against the requirements of your specific application. For a size or compound outside the standard catalog, APG can quote from a print or sample.