5.3MM CS X 61.5MM ID BLACK BUNA 70D

APG stocks the H5.3X61.5, a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 61.5 mm (2.421 in), a cross section of 5.3 mm (0.209 in), and an outside diameter of 72.1 mm (2.84 in). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

The compound resists water, greases and lubricants, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) delivers reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Exposure to automotive brake fluid or ozone and direct sunlight will shorten service life.

It sees regular use in fluid power, hydraulic and pneumatic systems, and automotive.

Reference part number H5.3X61.5 when ordering; the item is sold individually. Unit weight is approximately 5.7079 g. Application requirements vary, so validate compatibility with your process conditions prior to installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.