4MM CS X 340MM ID BLACK BUNA 70D

This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A measuring an inside diameter of 340 mm (13.386 in), a cross section of 4 mm (0.157 in), and an outside diameter of 348 mm (13.7 in), catalogued under part number H4X340. It provides a reliable static or dynamic seal by deforming into its gland under assembly load.

As a material, Buna-N (Nitrile) is known for the most widely specified general-purpose sealing elastomer and low compression set under sustained load. The material holds up against propane and butane, petroleum-based oils, and water. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with automotive brake fluid or strong acids.

It sees regular use in agricultural equipment, fluid power, and general industrial maintenance.

This item is sold individually under part number H4X340. Unit weight is approximately 16.903 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.