-372 BLACK BUNA 70D O-RING

H70372 is an AS568-372 black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 8.725 in (221.62 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 9.145 in (232.28 mm). In service, this o-ring delivers dependable bidirectional sealing in a compact groove envelope.

Expect good resistance to greases and lubricants, petroleum-based oils, and water. That behavior comes from the compound itself: Buna-N (Nitrile) is widely chosen for reliable performance in both static and dynamic service, strong abrasion and tear resistance. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Applications involving automotive brake fluid or strong acids call for a different compound.

Typical settings include general industrial maintenance, agricultural equipment, and fluid power.

This item is sold individually under part number H70372. Unit weight is approximately 19.36 g and nominal inside diameter is listed as 8 3/4 inch. Check the compound against your process media, pressure and temperature before committing to a design. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.