6MM CS X 45MM ID BLACK BUNA 70D

H6X45 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 45 mm (1.772 in), a cross section of 6 mm (0.236 in), and an outside diameter of 57 mm (2.24 in). In service, this o-ring remains the most cost-effective sealing element available for pressurized assemblies.

This material stands up to greases and lubricants, many alcohols, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) is known for an economical choice for high-volume maintenance programs, strong abrasion and tear resistance. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It should not be specified for service in strong acids or ozone and direct sunlight.

Maintenance and OEM teams specify it across automotive, fluid power, and hydraulic and pneumatic systems.

Reference part number H6X45 when ordering; the item is sold individually. Unit weight is approximately 5.5959 g. 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.