3MM CS X 80MM ID BLACK BUNA 70D

This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A with an inside diameter of 80 mm (3.15 in), a cross section of 3 mm (0.118 in), and an outside diameter of 86 mm (3.39 in), catalogued under part number H3X80. It seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Expect good resistance to petroleum-based oils, hydraulic fluids, and greases and lubricants. That behavior comes from the compound itself: Buna-N (Nitrile) is valued for low compression set under sustained load and the most widely specified general-purpose sealing elastomer. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C).

Typical settings include construction equipment, agricultural equipment, and general industrial maintenance.

Stocked as H3X80 and sold individually. Unit weight is approximately 2.2653 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.