Ordered as H5.3X47.5, this is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 47.5 mm (1.87 in), a cross section of 5.3 mm (0.209 in), and an outside diameter of 58.1 mm (2.29 in). The o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.
Buna-N (Nitrile) is specified here for reliable performance in both static and dynamic service, most widely specified general-purpose sealing elastomer. This material stands up to propane and butane, hydraulic fluids, and greases and lubricants. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with polar solvents or ketones.
You will find this material specified across hydraulic and pneumatic systems, fluid power, and automotive.
This item is sold individually under part number H5.3X47.5. Unit weight is approximately 4.6409 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Description 5.3MM CS X 47.5MM ID BLACK BUNA 70D
Actual Outside Diameter 58.1 mm (2.29 inch)
Actual Cross Section 5.3 mm (0.209 inch)
Actual Inside Diameter 47.5 mm (1.87 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity