7MM CS X 437MM ID BLACK BUNA 70D

Part number H7X437 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 437 mm (17.205 in), a cross section of 7 mm (0.276 in), and an outside diameter of 451 mm (17.76 in). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.

As a material, Buna-N (Nitrile) is widely chosen for strong abrasion and tear resistance, reliable performance in both static and dynamic service. This material stands up to propane and butane, water, and many alcohols. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where ozone and direct sunlight or polar solvents are present.

Typical settings include fluid power, construction equipment, and automotive.

Stocked as H7X437 and sold individually. Unit weight is approximately 66.5 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.