-454 BLACK BUNA 50D O-RING

H50454 is an AS568-454 black Buna-N (Nitrile) 50 Shore A O-Ring built to an inside diameter of 12.475 in (316.87 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 13.025 in (330.84 mm). In service, this o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

It resists water, greases and lubricants, and hydraulic fluids. That behavior comes from the compound itself: Buna-N (Nitrile) is widely chosen for reliable performance in both static and dynamic service, strong abrasion and tear resistance. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where strong acids or ketones are present.

You will find this material specified across hydraulic and pneumatic systems, automotive, and agricultural equipment.

Order part number H50454, sold individually. Nominal inside diameter is listed as 12 1/2 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.