-269 BLACK BUNA 50D O-RING

The H50269 is an AS568-269 black Buna-N (Nitrile) 50 Shore A O-Ring supplied with an inside diameter of 8.734 in (221.84 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 9.012 in (228.9 mm). This o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

The material holds up against petroleum-based oils, many alcohols, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) is valued for strong abrasion and tear resistance, low compression set under sustained load. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Verify compatibility before use with polar solvents or ketones.

It sees regular use in fluid power, general industrial maintenance, and agricultural equipment.

Stocked as H50269 and sold individually. Nominal inside diameter is listed as 8 3/4 inch. Check the compound against your process media, pressure and temperature before committing to a design.