-914 BLACK BUNA 50D O-RING

Part number H50914 is an AS568-914 black Buna-N (Nitrile) 50 Shore A O-Ring built to an inside diameter of 1.047 in (26.59 mm), a cross section of 0.116 in (2.95 mm), and an outside diameter of 1.279 in (32.49 mm). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

It resists water, propane and butane, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) is specified for strong abrasion and tear resistance, low compression set under sustained load. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Applications involving ketones or automotive brake fluid call for a different compound.

Maintenance and OEM teams specify it across construction equipment, hydraulic and pneumatic systems, and fluid power.

Order part number H50914, sold individually. Nominal inside diameter is listed as 7/8 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.