4.5MM CS X 80MM ID BLACK BUNA 70D

H4.5X80 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 80 mm (3.15 in), a cross section of 4.5 mm (0.177 in), and an outside diameter of 89 mm (3.5 in). In service, this o-ring compresses into its gland to block fluid or gas migration across a joint.

The material holds up against greases and lubricants, water, and many alcohols. Buna-N (Nitrile) is widely chosen for low compression set under sustained load, reliable performance in both static and dynamic service. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in automotive brake fluid or strong acids.

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

H4.5X80 ships individually. Review your operating media and conditions against this specification before installation.