5MM CS X 230MM ID BLACK BUNA 70D

APG stocks the H5X230, a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 230 mm (9.055 in), a cross section of 5 mm (0.197 in), and an outside diameter of 240 mm (9.45 in). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

Expect good resistance to petroleum-based oils, greases and lubricants, and hydraulic fluids. That behavior comes from the compound itself: Buna-N (Nitrile) is known for reliable performance in both static and dynamic service, the most widely specified general-purpose sealing elastomer. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Exposure to strong acids or ketones will shorten service life.

It sees regular use in hydraulic and pneumatic systems, automotive, and general industrial maintenance.

Stocked as H5X230 and sold individually. Unit weight is approximately 17.8001 g. Application requirements vary, so validate compatibility with your process conditions prior to installation. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.