-425 BLACK BUNA 50D O-RING

Part number H50425 is an AS568-425 black Buna-N (Nitrile) 50 Shore A O-Ring with an inside diameter of 4.475 in (113.67 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 5.025 in (127.64 mm). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

The compound resists hydraulic fluids, propane and butane, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) is valued for strong abrasion and tear resistance, reliable performance in both static and dynamic service. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where automotive brake fluid or ketones are present.

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

Order part number H50425, sold individually. Nominal inside diameter is listed as 4 1/2 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.