-404 BLACK BUNA 90D O-RING

This o-ring is supplied in AS568-404 black Buna-N (Nitrile) 90 Shore A built to an inside diameter of 1.85 in (46.99 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 2.4 in (60.96 mm), catalogued under part number H90404. It compresses into its gland to block fluid or gas migration across a joint.

Buna-N (Nitrile) is widely chosen for an economical choice for high-volume maintenance programs and the most widely specified general-purpose sealing elastomer. This material stands up to propane and butane, greases and lubricants, and water. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Exposure to strong acids or ketones will shorten service life.

It sees regular use in hydraulic and pneumatic systems, fluid power, and agricultural equipment.

This item is sold individually under part number H90404. Unit weight is approximately 8.49 g and nominal inside diameter is listed as 1 7/8 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.