4.5MM CS X 45MM ID BLACK BUNA 70D

This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A with an inside diameter of 45 mm (1.772 in), a cross section of 4.5 mm (0.177 in), and an outside diameter of 54 mm (2.13 in), catalogued under part number H4.5X45. It remains the most cost-effective sealing element available for pressurized assemblies.

It resists many alcohols, greases and lubricants, and hydraulic fluids. Buna-N (Nitrile) is specified for low compression set under sustained load, reliable performance in both static and dynamic service. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C).

Maintenance and OEM teams specify it across automotive, fluid power, and agricultural equipment.

H4.5X45 ships individually. Application requirements vary, so validate compatibility with your process conditions prior to installation.