4MM CS X 375MM ID BLACK BUNA 70D

APG stocks the H4X375, a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 375 mm (14.764 in), a cross section of 4 mm (0.157 in), and an outside diameter of 383 mm (15.08 in). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Buna-N (Nitrile) is widely chosen for reliable performance in both static and dynamic service, low compression set under sustained load. The compound resists hydraulic fluids, greases and lubricants, and many alcohols. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with strong acids or polar solvents.

Typical settings include construction equipment, hydraulic and pneumatic systems, and agricultural equipment.

Reference part number H4X375 when ordering; the item is sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.