Buna 70-236-Black-Pk50

APG stocks the SB-H70236-50, an AS568-236 black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 3.234 in (82.14 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 3.512 in (89.2 mm). An o-ring compresses into its gland to block fluid or gas migration across a joint. Source specification: 3.5IDX3.25"ODX.125"CS.

It resists hydraulic fluids, water, and propane and butane. Buna-N (Nitrile) is valued for strong abrasion and tear resistance, the most widely specified general-purpose sealing elastomer. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with strong acids or automotive brake fluid.

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

Stocked as SB-H70236-50 and sold by the bag. Nominal inside diameter is listed as 3 1/4 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.