3MM CS X 21MM ID BLACK BUNA 70D

This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A with an inside diameter of 21 mm (0.827 in), a cross section of 3 mm (0.118 in), and an outside diameter of 27 mm (1.06 in), catalogued under part number H3X21. It remains the most cost-effective sealing element available for pressurized assemblies.

The compound resists water, many alcohols, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) is widely chosen for the most widely specified general-purpose sealing elastomer, strong abrasion and tear resistance. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C).

It sees regular use in construction equipment, agricultural equipment, and automotive.

Order part number H3X21, sold individually. Unit weight is approximately 0.645 g. Review your operating media and conditions against this specification before installation.