-161 BLACK BUNA 70D O-RING

This o-ring is supplied in AS568-161 black Buna-N (Nitrile) 70 Shore A measuring an inside diameter of 5.487 in (139.37 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 5.693 in (144.6 mm), catalogued under part number H70161. It seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

This material stands up to many alcohols, petroleum-based oils, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) offers 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).

Typical settings include hydraulic and pneumatic systems, automotive, and fluid power.

Order part number H70161, sold individually. Unit weight is approximately 2.9371 g. Check the compound against your process media, pressure and temperature before committing to a design. 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.