4.5MM CS X 73MM ID BLACK BUNA 70D

H4.5X73 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 73 mm (2.874 in), a cross section of 4.5 mm (0.177 in), and an outside diameter of 82 mm (3.23 in). In service, this o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

As a material, Buna-N (Nitrile) is widely chosen for strong abrasion and tear resistance, an economical choice for high-volume maintenance programs. The material holds up against water, greases and lubricants, and petroleum-based oils. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with polar solvents or ketones.

You will find this material specified across automotive, hydraulic and pneumatic systems, and agricultural equipment.

Stocked as H4.5X73 and sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.