3.55MM CS X 185MM ID BLACK BUNA 70D

Ordered as H3.55X185, this is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 185 mm (7.283 in), a cross section of 3.55 mm (0.14 in), and an outside diameter of 192.1 mm (7.56 in). The o-ring compresses into its gland to block fluid or gas migration across a joint.

Buna-N (Nitrile) is valued for reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. The material holds up against many alcohols, hydraulic fluids, and propane and butane. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in strong acids or polar solvents.

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

This item is sold individually under part number H3.55X185. Unit weight is approximately 7.2281 g. 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.