5.7MM CS X 144.3MM ID BLACK BUNA 70D

The H5.7X144.3 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 144.3 mm (5.681 in), a cross section of 5.7 mm (0.224 in), and an outside diameter of 155.7 mm (6.13 in). This o-ring delivers dependable bidirectional sealing in a compact groove envelope.

The material holds up against petroleum-based oils, propane and butane, and water. Buna-N (Nitrile) offers low compression set under sustained load, reliable performance in both static and dynamic service. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where ketones or polar solvents are present.

Typical settings include construction equipment, general industrial maintenance, and fluid power.

Stocked as H5.7X144.3 and sold individually. As always, verify media compatibility and operating conditions against the requirements of your specific application.