Buna 70-313-Black-Pk50

APG stocks the SB-H70313-50, an AS568-313 black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 0.662 in (16.81 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 1.082 in (27.48 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: 0.210CSX0.662"IDX1.082"OD.

Buna-N (Nitrile) is specified here for most widely specified general-purpose sealing elastomer, strong abrasion and tear resistance. Expect good resistance to greases and lubricants, water, and propane and butane. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with strong acids or automotive brake fluid.

Maintenance and OEM teams specify it across general industrial maintenance, automotive, and construction equipment.

SB-H70313-50 ships by the bag. 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.