-451 BLACK BUNA 50D O-RING

APG stocks the H50451, an AS568-451 black Buna-N (Nitrile) 50 Shore A O-Ring with an inside diameter of 10.975 in (278.77 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 11.525 in (292.74 mm). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Buna-N (Nitrile) is valued for low compression set under sustained load, reliable performance in both static and dynamic service. The material holds up against propane and butane, hydraulic fluids, and many alcohols. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in ozone and direct sunlight or ketones.

Common environments for this compound include general industrial maintenance, agricultural equipment, and fluid power.

H50451 ships individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.