3.1MM CS X 84.4MM ID BLACK BUNA 70D

APG stocks the H3.1X84.4, a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 84.4 mm (3.323 in), a cross section of 3.1 mm (0.122 in), and an outside diameter of 90.6 mm (3.57 in). An o-ring remains the most cost-effective sealing element available for pressurized assemblies. Additional detail on this item: Metric O-RING, JIS G85.

Buna-N (Nitrile) is specified here for low compression set under sustained load, reliable performance in both static and dynamic service. Expect good resistance to petroleum-based oils, water, and hydraulic fluids. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with polar solvents or strong acids.

It sees regular use in construction equipment, automotive, and fluid power.

This item is sold individually under part number H3.1X84.4. Unit weight is approximately 2.5492 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.