4MM CS X 83MM ID BLACK BUNA 70D

H4X83 is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 83 mm (3.268 in), a cross section of 4 mm (0.157 in), and an outside diameter of 91 mm (3.58 in). In service, this o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

This material stands up to propane and butane, many alcohols, and water. That behavior comes from the compound itself: Buna-N (Nitrile) is known for low compression set under sustained load, reliable performance in both static and dynamic service. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It is not the right choice where ozone and direct sunlight or ketones are present.

Maintenance and OEM teams specify it across general industrial maintenance, construction equipment, and fluid power.

This item is sold individually under part number H4X83. Unit weight is approximately 4.29 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.