Buna 70-356-Black-Pk5

APG stocks the SB-H70356-5, an AS568-356 black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 5.35 in (135.89 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 5.77 in (146.56 mm). An o-ring remains the most cost-effective sealing element available for pressurized assemblies. Source specification: 0.210CSX5.350"IDX5.770"OD.

Expect good resistance to greases and lubricants, water, and hydraulic fluids. Buna-N (Nitrile) is valued for the most widely specified general-purpose sealing elastomer, reliable performance in both static and dynamic service. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C).

Maintenance and OEM teams specify it across automotive, general industrial maintenance, and fluid power.

Reference part number SB-H70356-5 when ordering; the item is sold by the bag. Nominal inside diameter is listed as 5 3/8 inch. Check the compound against your process media, pressure and temperature before committing to a design.