4.5MM CS X 25MM ID BLACK BUNA 70D

H4.5X25 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 25 mm (0.984 in), a cross section of 4.5 mm (0.177 in), and an outside diameter of 34 mm (1.34 in). In service, this o-ring compresses into its gland to block fluid or gas migration across a joint.

As a material, Buna-N (Nitrile) offers reliable performance in both static and dynamic service, strong abrasion and tear resistance. The compound resists water, greases and lubricants, and many alcohols. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C).

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

This item is sold individually under part number H4.5X25. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.