-437 BLACK BUNA 70D O-RING

H70437 is an AS568-437 black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 5.975 in (151.77 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 6.525 in (165.74 mm). In service, this 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, strong abrasion and tear resistance. This material stands up to greases and lubricants, hydraulic fluids, and petroleum-based oils. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Exposure to ozone and direct sunlight or ketones will shorten service life.

You will find this material specified across construction equipment, fluid power, and hydraulic and pneumatic systems.

Order part number H70437, sold individually. Unit weight is approximately 23.22 g and nominal inside diameter is listed as 6 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application.