3.5MM CS X 81MM ID BLACK BUNA 70D

The H3.5X81 is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 81 mm (3.189 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 88 mm (3.46 in). This o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Buna-N (Nitrile) offers an economical choice for high-volume maintenance programs and low compression set under sustained load. It resists greases and lubricants, petroleum-based oils, and water. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It should not be specified for service in polar solvents or strong acids.

Common environments for this compound include construction equipment, fluid power, and agricultural equipment.

Stocked as H3.5X81 and sold individually. Unit weight is approximately 3.232 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.