3.1MM CS X 89.4MM ID BLACK BUNA 70D

H3.1X89.4 is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 89.4 mm (3.52 in), a cross section of 3.1 mm (0.122 in), and an outside diameter of 95.6 mm (3.76 in). In service, this o-ring creates a positive seal at flange, piston and rod interfaces without added hardware. Supplementary detail from the product record: Metric O-RING, JIS G90.

Buna-N (Nitrile) is valued for an economical choice for high-volume maintenance programs and the most widely specified general-purpose sealing elastomer. Expect good resistance to petroleum-based oils, hydraulic fluids, and water. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Exposure to automotive brake fluid or ketones will shorten service life.

Common environments for this compound include fluid power, construction equipment, and automotive.

Reference part number H3.1X89.4 when ordering; the item is sold individually. Unit weight is approximately 2.6973 g. Application requirements vary, so validate compatibility with your process conditions prior to installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.