568-450 BUNA 70 SQUARE CUT RINGS

This square-cut ring is supplied in AS568-450 black Buna-N (Nitrile) 70 Shore A supplied with an inside diameter of 10.475 in (266.07 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 11.025 in (280.04 mm), catalogued under part number SH70450. It presents a flat rectangular section that cannot roll or twist in its groove, making it a dependable static seal.

The compound resists hydraulic fluids, petroleum-based oils, and many alcohols. Buna-N (Nitrile) delivers low compression set under sustained load and the most widely specified general-purpose sealing elastomer. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). 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 construction equipment, general industrial maintenance, and agricultural equipment.

SH70450 ships individually. 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.