4MM CS X 69MM ID BLACK BUNA 70D

APG stocks the H4X69, a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 69 mm (2.717 in), a cross section of 4 mm (0.157 in), and an outside diameter of 77 mm (3.03 in). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

The compound resists water, petroleum-based oils, and hydraulic fluids. That behavior comes from the compound itself: Buna-N (Nitrile) offers reliable performance in both static and dynamic service, the most widely specified general-purpose sealing elastomer. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with ketones or polar solvents.

Common environments for this compound include automotive, hydraulic and pneumatic systems, and agricultural equipment.

This item is sold individually under part number H4X69. Unit weight is approximately 3.6138 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. 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.