568-460 BUNA 70 SQUARE CUT RINGS

Part number SH70460 is an AS568-460 black Buna-N (Nitrile) 70 Shore A Square-Cut Ring with an inside diameter of 15.475 in (393.07 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 16.025 in (407.04 mm). A square-cut ring presents a flat rectangular section that cannot roll or twist in its groove, making it a dependable static seal.

Buna-N (Nitrile) is valued for low compression set under sustained load and an economical choice for high-volume maintenance programs. The compound resists greases and lubricants, many alcohols, and petroleum-based oils. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in ketones or polar solvents. The profile itself contributes a rectangular section that will not roll in the groove 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.

Maintenance and OEM teams specify it across hydraulic and pneumatic systems, construction equipment, and automotive.

SH70460 ships individually. Nominal inside diameter is listed as 15 1/2 inch. 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.