3.5MM CS X 43MM ID BLACK BUNA 70D

This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A with an inside diameter of 43 mm (1.693 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 50 mm (1.97 in), catalogued under part number H3.5X43. It seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Buna-N (Nitrile) is widely chosen for low compression set under sustained load and an economical choice for high-volume maintenance programs. Expect good resistance to propane and butane, petroleum-based oils, and many alcohols. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Exposure to ketones or automotive brake fluid will shorten service life.

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

Order part number H3.5X43, sold individually. Unit weight is approximately 1.743 g. Check the compound against your process media, pressure and temperature before committing to a design.