568-447 BUNA 70 SQUARE CUT RINGS

SH70447 is an AS568-447 black Buna-N (Nitrile) 70 Shore A Square-Cut Ring built to an inside diameter of 8.975 in (227.97 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 9.525 in (241.94 mm). In service, this square-cut ring presents a flat rectangular section that cannot roll or twist in its groove, making it a dependable static seal.

As a material, Buna-N (Nitrile) is valued for reliable performance in both static and dynamic service, strong abrasion and tear resistance. Expect good resistance to hydraulic fluids, water, and petroleum-based oils. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Applications involving strong acids or ozone and direct sunlight call for a different compound. The profile itself contributes greater resistance to extrusion than a round section of the same size 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.

Common environments for this compound include construction equipment, agricultural equipment, and general industrial maintenance.

This item is sold individually under part number SH70447. Unit weight is approximately 34.788 g and nominal inside diameter is listed as 9 inch. Review your operating media and conditions against this specification before installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.