Buna 70-148-Black-Pk50

APG stocks the SB-H70148-50, an AS568-148 black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 2.737 in (69.52 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 2.943 in (74.75 mm). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces. Source specification: 2.9375IDX2.75"ODX.0938"CS.

As a material, Buna-N (Nitrile) delivers reliable performance in both static and dynamic service, strong abrasion and tear resistance. The material holds up against petroleum-based oils, greases and lubricants, and hydraulic fluids. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Applications involving automotive brake fluid or ketones call for a different compound.

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

This item is sold by the bag under part number SB-H70148-50. Nominal inside diameter is listed as 2 3/4 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.