-402 BLACK BUNA 90D O-RING

This o-ring is supplied in AS568-402 black Buna-N (Nitrile) 90 Shore A measuring an inside diameter of 1.6 in (40.64 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 2.15 in (54.61 mm), catalogued under part number H90402. It compresses into its gland to block fluid or gas migration across a joint.

This material stands up to propane and butane, petroleum-based oils, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) offers low compression set under sustained load and the most widely specified general-purpose sealing elastomer. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Exposure to ozone and direct sunlight or automotive brake fluid will shorten service life.

Common environments for this compound include general industrial maintenance, construction equipment, and automotive.

H90402 ships individually. Unit weight is approximately 8.1411 g and nominal inside diameter is listed as 1 5/8 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.