4MM CS X 186MM ID BLACK BUNA 70D

APG stocks the H4X186, a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 186 mm (7.323 in), a cross section of 4 mm (0.157 in), and an outside diameter of 194 mm (7.64 in). An o-ring compresses into its gland to block fluid or gas migration across a joint.

Buna-N (Nitrile) is specified here for reliable performance in both static and dynamic service, low compression set under sustained load. The compound resists water, hydraulic fluids, and greases and lubricants. 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 ozone and direct sunlight or automotive brake fluid.

Typical settings include fluid power, construction equipment, and hydraulic and pneumatic systems.

H4X186 ships individually. Unit weight is approximately 9.16 g. As always, verify media compatibility and operating conditions against the requirements of your specific application.