-250 BLACK BUNA 50D O-RING

This o-ring is supplied in AS568-250 black Buna-N (Nitrile) 50 Shore A supplied with an inside diameter of 4.984 in (126.59 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 5.262 in (133.65 mm), catalogued under part number H50250. It creates a positive seal at flange, piston and rod interfaces without added hardware.

The compound resists propane and butane, water, and greases and lubricants. Buna-N (Nitrile) delivers low compression set under sustained load, strong abrasion and tear resistance. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Applications involving automotive brake fluid or ketones call for a different compound.

You will find this material specified across fluid power, agricultural equipment, and general industrial maintenance.

This item is sold individually under part number H50250. 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.