1MM CS X 9MM ID BLACK BUNA 90D

H90M1X9 is a black Buna-N (Nitrile) 90 Shore A O-Ring measuring an inside diameter of 9 mm (0.354 in), a cross section of 1 mm (0.039 in), and an outside diameter of 11 mm (0.43 in). In service, this o-ring compresses into its gland to block fluid or gas migration across a joint.

This material stands up to water, petroleum-based oils, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) is known for reliable performance in both static and dynamic service, strong abrasion and tear resistance. 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 strong acids or automotive brake fluid are present.

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

This item is sold individually under part number H90M1X9. Unit weight is approximately 0.0364 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.