-328 BLACK BUNA 70D O-RING

The H70328 is an AS568-328 black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 1.85 in (46.99 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 2.27 in (57.66 mm). This o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

As a material, Buna-N (Nitrile) is known for low compression set under sustained load, strong abrasion and tear resistance. Expect good resistance to propane and butane, hydraulic fluids, and water. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in ketones or strong acids.

You will find this material specified across fluid power, general industrial maintenance, and automotive.

Order part number H70328, sold individually. Unit weight is approximately 0.0046 g. Check the compound against your process media, pressure and temperature before committing to a design. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.