5.3MM CS X 80MM ID BLACK BUNA 70D

H5.3X80 is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 80 mm (3.15 in), a cross section of 5.3 mm (0.209 in), and an outside diameter of 90.6 mm (3.57 in). In service, this o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

The compound resists petroleum-based oils, hydraulic fluids, and many alcohols. Buna-N (Nitrile) is specified for low compression set under sustained load and the most widely specified general-purpose sealing elastomer. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It should not be specified for service in automotive brake fluid or polar solvents.

You will find this material specified across general industrial maintenance, automotive, and agricultural equipment.

This item is sold individually under part number H5.3X80. Unit weight is approximately 7.4085 g. Check the compound against your process media, pressure and temperature before committing to a design. 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.