568-227 BUNA 70 SQUARE CUT RINGS

Part number SH70227 is an AS568-227 black Buna-N (Nitrile) 70 Shore A Square-Cut Ring supplied with an inside diameter of 2.109 in (53.57 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 2.387 in (60.63 mm). A square-cut ring offers greater contact area against the gland wall than an equivalent o-ring.

Expect good resistance to propane and butane, greases and lubricants, and water. That behavior comes from the compound itself: Buna-N (Nitrile) is specified for the most widely specified general-purpose sealing elastomer and low compression set under sustained load. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in strong acids or polar solvents. The profile itself contributes a flat contact band that spreads sealing load across a wider area and simple lathe-cut manufacture at low tooling cost. Note that a square section is less suited to high-speed rotary service, where the larger contact area raises friction and heat.

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

This item is sold individually under part number SH70227. Unit weight is approximately 2.5769 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.