568-435 BUNA 70 SQUARE CUT RINGS

Part number SH70435 is an AS568-435 black Buna-N (Nitrile) 70 Shore A Square-Cut Ring measuring an inside diameter of 5.725 in (145.42 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 6.275 in (159.39 mm). A square-cut ring provides an economical lathe-cut alternative where a moulded o-ring is not required.

The compound resists water, propane and butane, and hydraulic fluids. Buna-N (Nitrile) is widely chosen for the most widely specified general-purpose sealing elastomer and low compression set under sustained load. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). The profile itself contributes simple lathe-cut manufacture at low tooling cost and greater resistance to extrusion than a round section of the same size. Note that a square section is less suited to high-speed rotary service, where the larger contact area raises friction and heat.

Common environments for this compound include construction equipment, agricultural equipment, and hydraulic and pneumatic systems.

This item is sold individually under part number SH70435. Unit weight is approximately 22.302 g and nominal inside diameter is listed as 5 3/4 inch. Check the compound against your process media, pressure and temperature before committing to a design. For a size or compound outside the standard catalog, APG can quote from a print or sample.