4.5MM CS X 64MM ID BLACK BUNA 70D

APG stocks the H4.5X64, a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 64 mm (2.52 in), a cross section of 4.5 mm (0.177 in), and an outside diameter of 73 mm (2.87 in). An o-ring remains the most cost-effective sealing element available for pressurized assemblies.

The compound resists petroleum-based oils, hydraulic fluids, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) is widely chosen for an economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Verify compatibility before use with strong acids or polar solvents.

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

Reference part number H4.5X64 when ordering; the item is sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.