-139 WHITE BUNA 70D FDA O-RING

This o-ring is supplied in AS568-139 white Buna-N (Nitrile) 70 Shore A measuring an inside diameter of 2.175 in (55.25 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 2.381 in (60.48 mm), catalogued under part number H70FDA139. It seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

As a material, Buna-N (Nitrile) delivers strong abrasion and tear resistance, reliable performance in both static and dynamic service. Expect good resistance to propane and butane, water, and petroleum-based oils. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Applications involving strong acids or automotive brake fluid call for a different compound.

This item meets FDA requirements for food contact, is metal detectable for HACCP and foreign-body control programs. It sees regular use in agricultural equipment, general industrial maintenance, and fluid power.

Reference part number H70FDA139 when ordering; the item is sold individually. Unit weight is approximately 1.276 g and nominal inside diameter is listed as 2 3/16 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.