Buna 70-153-Black-Pk50

The SB-H70153-50 is an AS568-153 black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 3.487 in (88.57 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 3.693 in (93.8 mm). This o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces. Source specification: 3.6875IDX3.5"ODX.0938"CS.

Buna-N (Nitrile) is specified here for strong abrasion and tear resistance, reliable performance in both static and dynamic service. The material holds up against greases and lubricants, propane and butane, and hydraulic fluids. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with polar solvents or automotive brake fluid.

It sees regular use in construction equipment, agricultural equipment, and fluid power.

This item is sold by the bag under part number SB-H70153-50. 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.