568-149 BUNA 70 SQUARE CUT RINGS

APG stocks the SH70149, an AS568-149 black Buna-N (Nitrile) 70 Shore A square profile Quad-Ring supplied with an inside diameter of 2.8 in (71.12 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 3.006 in (76.35 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 low compression set under sustained load and most widely specified general-purpose sealing elastomer. The material holds up against petroleum-based oils, propane and butane, and many alcohols. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Applications involving polar solvents or ketones call for a different compound.

It sees regular use in automotive, construction equipment, and agricultural equipment.

SH70149 ships individually. Unit weight is approximately 1.8169 g and nominal inside diameter is listed as 2 13/16 inch. Review your operating media and conditions against this specification before installation.