3MM CS X 63MM ID BLACK BUNA 70D

Part number H3X63 is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 63 mm (2.48 in), a cross section of 3 mm (0.118 in), and an outside diameter of 69 mm (2.72 in). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

Buna-N (Nitrile) is specified here for strong abrasion and tear resistance, economical choice for high-volume maintenance programs. This material stands up to hydraulic fluids, greases and lubricants, and petroleum-based oils. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Exposure to polar solvents or ozone and direct sunlight will shorten service life.

It sees regular use in fluid power, automotive, and agricultural equipment.

Stocked as H3X63 and sold individually. Unit weight is approximately 1.7899 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.