-363 BLACK BUNA 70D O-RING

This o-ring is supplied in AS568-363 black Buna-N (Nitrile) 70 Shore A with an inside diameter of 6.475 in (164.47 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 6.895 in (175.13 mm), catalogued under part number H70MD363. It provides a reliable static or dynamic seal by deforming into its gland under assembly load.

Expect good resistance to water, hydraulic fluids, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) is known for strong abrasion and tear resistance, low compression set under sustained load. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Applications involving strong acids or ozone and direct sunlight call for a different compound.

The compound is metal detectable for HACCP and foreign-body control programs. Maintenance and OEM teams specify it across general industrial maintenance, automotive, and agricultural equipment.

H70MD363 ships individually. Nominal inside diameter is listed as 6 1/2 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.