568-451 BUNA 70 SQUARE CUT RINGS

APG stocks the SH70451, an AS568-451 black Buna-N (Nitrile) 70 Shore A square profile Quad-Ring built to an inside diameter of 10.975 in (278.77 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 11.525 in (292.74 mm). A quad-ring resists spiral failure in reciprocating service thanks to its multi-lobe geometry.

Buna-N (Nitrile) is known for reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. It resists greases and lubricants, water, and propane and butane. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It is not the right choice where strong acids or automotive brake fluid are present.

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

SH70451 ships individually. As always, verify media compatibility and operating conditions against the requirements of your specific application. For a size or compound outside the standard catalog, APG can quote from a print or sample.