-310 BLACK BUNA 70D O-RING

Ordered as H70310, this is an AS568-310 black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 0.475 in (12.07 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 0.895 in (22.73 mm). The o-ring remains the most cost-effective sealing element available for pressurized assemblies.

Expect good resistance to hydraulic fluids, many alcohols, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) is widely chosen for low compression set under sustained load and the most widely specified general-purpose sealing elastomer. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Verify compatibility before use with polar solvents or ozone and direct sunlight.

Common environments for this compound include automotive, general industrial maintenance, and agricultural equipment.

Reference part number H70310 when ordering; the item is sold individually. Unit weight is approximately 1.4896 g and nominal inside diameter is listed as 1/2 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. For a size or compound outside the standard catalog, APG can quote from a print or sample.