4MM CS X 106MM ID BLACK BUNA 70D

Ordered as H4X106, this is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 106 mm (4.173 in), a cross section of 4 mm (0.157 in), and an outside diameter of 114 mm (4.49 in). The o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

It resists hydraulic fluids, greases and lubricants, and many alcohols. Buna-N (Nitrile) delivers an economical choice for high-volume maintenance programs, strong abrasion and tear resistance. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with ozone and direct sunlight or polar solvents.

Maintenance and OEM teams specify it across automotive, fluid power, and agricultural equipment.

Reference part number H4X106 when ordering; the item is sold individually. Unit weight is approximately 5.2986 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.