3.1MM CS X 34.4MM ID BLACK BUNA 70D

This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A measuring an inside diameter of 34.4 mm (1.354 in), a cross section of 3.1 mm (0.122 in), and an outside diameter of 40.6 mm (1.6 in), catalogued under part number H3.1X34.4. It compresses into its gland to block fluid or gas migration across a joint. The catalog record notes: Metric O-RING, JIS G35.

Buna-N (Nitrile) delivers reliable performance in both static and dynamic service, low compression set under sustained load. The compound resists many alcohols, hydraulic fluids, and petroleum-based oils. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Applications involving polar solvents or ketones call for a different compound.

Maintenance and OEM teams specify it across hydraulic and pneumatic systems, fluid power, and automotive.

Order part number H3.1X34.4, sold individually. Unit weight is approximately 1.1021 g. Check the compound against your process media, pressure and temperature before committing to a design. For a size or compound outside the standard catalog, APG can quote from a print or sample.