4.5MM CS X 27MM ID BLACK BUNA 70D

This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A with an inside diameter of 27 mm (1.063 in), a cross section of 4.5 mm (0.177 in), and an outside diameter of 36 mm (1.42 in), catalogued under part number H4.5X27. It compresses into its gland to block fluid or gas migration across a joint.

Buna-N (Nitrile) offers low compression set under sustained load, strong abrasion and tear resistance. The material holds up against greases and lubricants, propane and butane, 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 automotive brake fluid.

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

Stocked as H4.5X27 and sold individually. Check the compound against your process media, pressure and temperature before committing to a design. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.