-449 BLACK BUNA 90D O-RING

Ordered as H90449, this is an AS568-449 black Buna-N (Nitrile) 90 Shore A O-Ring built to an inside diameter of 9.975 in (253.37 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 10.525 in (267.34 mm). The o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Buna-N (Nitrile) is widely chosen for an economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. The compound resists water, petroleum-based oils, and propane and butane. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with ozone and direct sunlight or ketones.

Maintenance and OEM teams specify it across automotive, construction equipment, and general industrial maintenance.

H90449 ships individually. Unit weight is approximately 0.0409 g. Check the compound against your process media, pressure and temperature before committing to a design.