2MM CS X 31.5MM ID BLACK BUNA 70D

Ordered as H2X31.5, this is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 31.5 mm (1.24 in), a cross section of 2 mm (0.079 in), and an outside diameter of 35.5 mm (1.4 in). The o-ring remains the most cost-effective sealing element available for pressurized assemblies. The catalog record notes: Metric O-RING, JIS S32.

As a material, Buna-N (Nitrile) is widely chosen for the most widely specified general-purpose sealing elastomer and low compression set under sustained load. This material stands up to propane and butane, hydraulic fluids, and petroleum-based oils. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with polar solvents or ozone and direct sunlight.

Maintenance and OEM teams specify it across general industrial maintenance, construction equipment, and fluid power.

Stocked as H2X31.5 and sold individually. Unit weight is approximately 0.0005 g. Check the compound against your process media, pressure and temperature before committing to a design.