3.1MM CS X 34.4MM ID BLACK BUNA 90D

This o-ring is supplied in black Buna-N (Nitrile) 90 Shore A supplied with 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 H90M3.1X34.4. It compresses into its gland to block fluid or gas migration across a joint. Supplementary detail from the product record: Metric O-RING, JIS G35.

Expect good resistance to hydraulic fluids, many alcohols, and greases and lubricants. That behavior comes from the compound itself: Buna-N (Nitrile) offers reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Exposure to ozone and direct sunlight or strong acids will shorten service life.

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

H90M3.1X34.4 ships individually. Unit weight is approximately 1.2535 g. Review your operating media and conditions against this specification before installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.