8MM CS X 70MM ID BLACK BUNA 70D

The H8X70 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 70 mm (2.756 in), a cross section of 8 mm (0.315 in), and an outside diameter of 86 mm (3.39 in). This o-ring delivers dependable bidirectional sealing in a compact groove envelope.

Buna-N (Nitrile) is specified here for economical choice for high-volume maintenance programs, strong abrasion and tear resistance. The compound resists petroleum-based oils, greases and lubricants, and water. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Applications involving automotive brake fluid or ozone and direct sunlight call for a different compound.

Maintenance and OEM teams specify it across construction equipment, fluid power, and automotive.

Stocked as H8X70 and sold individually. Unit weight is approximately 15.043 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.