568-010 BUNA 70 SQUARE CUT RINGS

APG stocks the SH70010, an AS568-010 black Buna-N (Nitrile) 70 Shore A square profile Quad-Ring supplied with an inside diameter of 0.239 in (6.07 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 0.379 in (9.63 mm). A quad-ring resists spiral failure in reciprocating service thanks to its multi-lobe geometry.

Buna-N (Nitrile) is widely chosen for low compression set under sustained load and the most widely specified general-purpose sealing elastomer. This material stands up to petroleum-based oils, hydraulic fluids, and water. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Applications involving polar solvents or ozone and direct sunlight call for a different compound.

Maintenance and OEM teams specify it across automotive, fluid power, and hydraulic and pneumatic systems.

Reference part number SH70010 when ordering; the item is sold individually. Unit weight is approximately 0.086 g and nominal inside diameter is listed as 1/4 inch. Review your operating media and conditions against this specification before installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.