5.3MM CS X 112MM ID BLACK BUNA 70D

The H5.3X112 is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 112 mm (4.409 in), a cross section of 5.3 mm (0.209 in), and an outside diameter of 122.6 mm (4.83 in). This o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

The material holds up against many alcohols, greases and lubricants, and water. That behavior comes from the compound itself: Buna-N (Nitrile) is valued for reliable performance in both static and dynamic service, the most widely specified general-purpose sealing elastomer. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Applications involving polar solvents or automotive brake fluid call for a different compound.

You will find this material specified across general industrial maintenance, agricultural equipment, and construction equipment.

This item is sold individually under part number H5.3X112. Unit weight is approximately 10.298 g. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.