4MM CS X 31MM ID BLACK BUNA 70D

This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A measuring an inside diameter of 31 mm (1.22 in), a cross section of 4 mm (0.157 in), and an outside diameter of 39 mm (1.54 in), catalogued under part number H4X31. It creates a positive seal at flange, piston and rod interfaces without added hardware.

The compound resists petroleum-based oils, water, and hydraulic fluids. That behavior comes from the compound itself: Buna-N (Nitrile) is widely chosen for an economical choice for high-volume maintenance programs and the most widely specified general-purpose sealing elastomer. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Applications involving ozone and direct sunlight or polar solvents call for a different compound.

Common environments for this compound include general industrial maintenance, fluid power, and hydraulic and pneumatic systems.

Order part number H4X31, sold individually. Unit weight is approximately 1.6775 g. Review your operating media and conditions against this specification before installation.