5.7MM CS X 479.3MM ID BLACK BUNA 70D

This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A measuring an inside diameter of 479.3 mm (18.87 in), a cross section of 5.7 mm (0.224 in), and an outside diameter of 490.7 mm (19.32 in), catalogued under part number H5.7X479.3. It seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces. Additional detail on this item: Metric O-RING, JIS G480.

This material stands up to hydraulic fluids, many alcohols, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) delivers an economical choice for high-volume maintenance programs and the most widely specified general-purpose sealing elastomer. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in ozone and direct sunlight or automotive brake fluid.

Maintenance and OEM teams specify it across agricultural equipment, automotive, and hydraulic and pneumatic systems.

Reference part number H5.7X479.3 when ordering; the item is sold individually. Unit weight is approximately 47.26 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.