4MM CS X 210MM ID BLACK BUNA 70D

Ordered as H4X210, this is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 210 mm (8.268 in), a cross section of 4 mm (0.157 in), and an outside diameter of 218 mm (8.58 in). The o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Buna-N (Nitrile) is specified here for low compression set under sustained load and economical choice for high-volume maintenance programs. Expect good resistance to water, many alcohols, and greases and lubricants. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It should not be specified for service in ozone and direct sunlight or polar solvents.

Typical settings include hydraulic and pneumatic systems, general industrial maintenance, and agricultural equipment.

This item is sold individually under part number H4X210. Unit weight is approximately 10.354 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.