3MM CS X 320MM ID BLACK BUNA 70D

The H3X320 is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 320 mm (12.598 in), a cross section of 3 mm (0.118 in), and an outside diameter of 326 mm (12.83 in). This o-ring remains the most cost-effective sealing element available for pressurized assemblies.

The material holds up against propane and butane, petroleum-based oils, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) delivers an economical choice for high-volume maintenance programs and the most widely specified general-purpose sealing elastomer. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Verify compatibility before use with ketones or strong acids.

Typical settings include general industrial maintenance, automotive, and construction equipment.

Stocked as H3X320 and sold individually. Unit weight is approximately 8.759 g. Check the compound against your process media, pressure and temperature before committing to a design. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.