-312 BLACK BUNA 70D O-RING

Ordered as H70MD312, this is an AS568-312 black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 0.6 in (15.24 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 1.02 in (25.91 mm). The o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

The material holds up against greases and lubricants, water, and hydraulic fluids. Buna-N (Nitrile) is widely chosen for low compression set under sustained load, reliable performance in both static and dynamic service. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Exposure to polar solvents or ketones will shorten service life.

This item is metal detectable for HACCP and foreign-body control programs. Common environments for this compound include agricultural equipment, general industrial maintenance, and fluid power.

H70MD312 ships individually. Nominal inside diameter is listed as 5/8 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.