4MM CS X 144MM ID BLACK BUNA 70D

Part number H4X144 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 144 mm (5.669 in), a cross section of 4 mm (0.157 in), and an outside diameter of 152 mm (5.98 in). An o-ring compresses into its gland to block fluid or gas migration across a joint.

This material stands up to many alcohols, propane and butane, and hydraulic fluids. That behavior comes from the compound itself: Buna-N (Nitrile) is widely chosen for the most widely specified general-purpose sealing elastomer and an economical choice for high-volume maintenance programs. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It should not be specified for service in strong acids or ketones.

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

Reference part number H4X144 when ordering; the item is sold individually. Check the compound against your process media, pressure and temperature before committing to a design. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.