2MM CS X 31MM ID BLACK BUNA 90D

The H90M2X31 is a black Buna-N (Nitrile) 90 Shore A O-Ring with an inside diameter of 31 mm (1.22 in), a cross section of 2 mm (0.079 in), and an outside diameter of 35 mm (1.38 in). This o-ring creates a positive seal at flange, piston and rod interfaces without added hardware. This item is further identified as Metric O-RING, JIS S31.5.

This material stands up to propane and butane, water, and greases and lubricants. That behavior comes from the compound itself: Buna-N (Nitrile) is valued for strong abrasion and tear resistance, reliable performance in both static and dynamic service. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Exposure to polar solvents or strong acids will shorten service life.

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

This item is sold individually under part number H90M2X31. As always, verify media compatibility and operating conditions against the requirements of your specific application.