Buna 70-049-Black-Pk500

Part number SB-H70049-500 is an AS568-049 black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 4.989 in (126.72 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 5.129 in (130.28 mm). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces. The catalog record notes: 5.125IDX5"ODX.0625"CS.

As a material, Buna-N (Nitrile) offers strong abrasion and tear resistance, reliable performance in both static and dynamic service. The material holds up against many alcohols, propane and butane, and petroleum-based oils. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Exposure to ketones or ozone and direct sunlight will shorten service life.

You will find this material specified across general industrial maintenance, agricultural equipment, and automotive.

This item is sold by the bag under part number SB-H70049-500. Nominal inside diameter is listed as 5 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. For a size or compound outside the standard catalog, APG can quote from a print or sample.