4MM CS X 118MM ID BLACK BUNA 70D

APG stocks the H4X118, a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 118 mm (4.646 in), a cross section of 4 mm (0.157 in), and an outside diameter of 126 mm (4.96 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 specified here for most widely specified general-purpose sealing elastomer, reliable performance in both static and dynamic service. The material holds up against many alcohols, petroleum-based oils, and greases and lubricants. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Exposure to polar solvents or ketones will shorten service life.

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

Reference part number H4X118 when ordering; the item is sold individually. Unit weight is approximately 5.918 g. Review your operating media and conditions against this specification before installation. 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.