-155 BLACK BUNA 50D O-RING

Part number H50155 is an AS568-155 black Buna-N (Nitrile) 50 Shore A O-Ring with an inside diameter of 3.987 in (101.27 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 4.193 in (106.5 mm). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

Buna-N (Nitrile) delivers low compression set under sustained load, strong abrasion and tear resistance. It resists water, propane and butane, and petroleum-based oils. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Applications involving polar solvents or ozone and direct sunlight call for a different compound.

Typical settings include construction equipment, fluid power, and agricultural equipment.

Stocked as H50155 and sold individually. Nominal inside diameter is listed as 4 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.