-277 BLACK BUNA 70D O-RING

APG stocks the H70277, an AS568-277 black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 11.484 in (291.69 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 11.762 in (298.75 mm). An o-ring remains the most cost-effective sealing element available for pressurized assemblies.

As a material, Buna-N (Nitrile) delivers reliable performance in both static and dynamic service, the most widely specified general-purpose sealing elastomer. The compound resists propane and butane, hydraulic fluids, and greases and lubricants. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with automotive brake fluid or ketones.

Common environments for this compound include automotive, fluid power, and construction equipment.

Reference part number H70277 when ordering; the item is sold individually. Unit weight is approximately 11.215 g and nominal inside diameter is listed as 11 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.