3.5MM CS X 58MM ID BLACK BUNA 70D

Ordered as H3.5X58, this is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 58 mm (2.283 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 65 mm (2.56 in). The o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Expect good resistance to many alcohols, water, and greases and lubricants. That behavior comes from the compound itself: Buna-N (Nitrile) is valued for reliable performance in both static and dynamic service, low compression set under sustained load. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Applications involving automotive brake fluid or ozone and direct sunlight call for a different compound.

It sees regular use in agricultural equipment, general industrial maintenance, and fluid power.

Order part number H3.5X58, sold individually. Unit weight is approximately 2.27 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.