3MM CS X 20MM ID BLACK BUNA 70D

This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A built to an inside diameter of 20 mm (0.787 in), a cross section of 3 mm (0.118 in), and an outside diameter of 26 mm (1.02 in), catalogued under part number H3X20. It creates a positive seal at flange, piston and rod interfaces without added hardware. This item is further identified as Metric O-RING, JIS G20.

Expect good resistance to petroleum-based oils, propane and butane, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) delivers 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. Verify compatibility before use with strong acids or automotive brake fluid.

Common environments for this compound include fluid power, construction equipment, and automotive.

H3X20 ships individually. Unit weight is approximately 0.62 g. Review your operating media and conditions against this specification before installation.