-328 BLACK BUNA 70D O-RING

The H70MD328 is an AS568-328 black Buna-N (Nitrile) 70 Shore A O-Ring with 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 delivers dependable bidirectional sealing in a compact groove envelope.

The compound resists greases and lubricants, propane and butane, and water. Buna-N (Nitrile) is valued for an economical choice for high-volume maintenance programs and low compression set under sustained load. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It should not be specified for service in automotive brake fluid or polar solvents.

The compound is metal detectable for HACCP and foreign-body control programs. You will find this material specified across general industrial maintenance, hydraulic and pneumatic systems, and agricultural equipment.

Stocked as H70MD328 and sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.