568-282 BUNA 70 SQUARE CUT RINGS

APG stocks the SH70282, an AS568-282 black Buna-N (Nitrile) 70 Shore A square profile Quad-Ring supplied with an inside diameter of 15.955 in (405.26 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 16.233 in (412.32 mm). A quad-ring uses a four-lobed profile to create two sealing surfaces per side, reducing the squeeze needed to seal.

Buna-N (Nitrile) is specified here for economical choice for high-volume maintenance programs and most widely specified general-purpose sealing elastomer. Expect good resistance to water, petroleum-based oils, and hydraulic fluids. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with strong acids or polar solvents.

Maintenance and OEM teams specify it across fluid power, agricultural equipment, and construction equipment.

Stocked as SH70282 and sold individually. Nominal inside diameter is listed as 16 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.