Buna 70-206-Black-Pk25

APG stocks the SB-H70206-25, an AS568-206 black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 0.484 in (12.29 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 0.762 in (19.35 mm). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load. Additional detail on this item: 0.139CSX0.484"IDX0.762"OD.

The material holds up against many alcohols, greases and lubricants, and hydraulic fluids. Buna-N (Nitrile) offers reliable performance in both static and dynamic service, 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 automotive brake fluid or polar solvents call for a different compound.

You will find this material specified across construction equipment, agricultural equipment, and hydraulic and pneumatic systems.

Stocked as SB-H70206-25 and sold by the bag. As always, verify media compatibility and operating conditions against the requirements of your specific application. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.