3MM CS X 87MM ID BLACK BUNA 70D

APG stocks the H3X87, a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 87 mm (3.425 in), a cross section of 3 mm (0.118 in), and an outside diameter of 93 mm (3.66 in). An o-ring compresses into its gland to block fluid or gas migration across a joint.

The compound resists greases and lubricants, water, and petroleum-based oils. Buna-N (Nitrile) delivers the most widely specified general-purpose sealing elastomer and low compression set under sustained load. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It is not the right choice where ketones or automotive brake fluid are present.

Common environments for this compound include hydraulic and pneumatic systems, general industrial maintenance, and agricultural equipment.

This item is sold individually under part number H3X87. Unit weight is approximately 2.48 g. Review your operating media and conditions against this specification before installation. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.