4.5MM CS X 100MM ID BLACK BUNA 70D

Part number H4.5X100 is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 100 mm (3.937 in), a cross section of 4.5 mm (0.177 in), and an outside diameter of 109 mm (4.29 in). An o-ring compresses into its gland to block fluid or gas migration across a joint.

Buna-N (Nitrile) offers strong abrasion and tear resistance, reliable performance in both static and dynamic service. The material holds up against propane and butane, greases and lubricants, and many alcohols. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Applications involving ketones or strong acids call for a different compound.

Maintenance and OEM teams specify it across fluid power, general industrial maintenance, and automotive.

Stocked as H4.5X100 and sold individually. Check the compound against your process media, pressure and temperature before committing to a design. For a size or compound outside the standard catalog, APG can quote from a print or sample.