568-244 BUNA 70 SQUARE CUT RINGS

Part number SH70244 is an AS568-244 black Buna-N (Nitrile) 70 Shore A Square-Cut Ring supplied with an inside diameter of 4.234 in (107.54 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 4.512 in (114.6 mm). A square-cut ring seals with a broad flat contact band instead of the line contact of a round-section ring.

As a material, Buna-N (Nitrile) offers low compression set under sustained load, reliable performance in both static and dynamic service. Expect good resistance to hydraulic fluids, water, and propane and butane. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Applications involving ketones or polar solvents call for a different compound. The profile itself contributes greater resistance to extrusion than a round section of the same size and a rectangular section that will not roll in the groove. Note that a square section is less suited to high-speed rotary service, where the larger contact area raises friction and heat.

Typical settings include general industrial maintenance, fluid power, and hydraulic and pneumatic systems.

This item is sold individually under part number SH70244. Unit weight is approximately 4.9583 g and nominal inside diameter is listed as 4 1/4 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.