3.1MM CS X 69.4MM ID BLACK BUNA 70D

H3.1X69.4 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 69.4 mm (2.732 in), a cross section of 3.1 mm (0.122 in), and an outside diameter of 75.6 mm (2.98 in). In service, this o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces. Additional detail on this item: Metric O-RING, JIS G70.

Buna-N (Nitrile) is known for low compression set under sustained load, reliable performance in both static and dynamic service. 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). Applications involving strong acids or ozone and direct sunlight call for a different compound.

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

Reference part number H3.1X69.4 when ordering; the item is sold individually. Unit weight is approximately 2.0879 g. Review your operating media and conditions against this specification before installation.