568-265 FKM 75 SQUARE CUT RINGS

APG stocks the SV70265, an AS568-265 black Viton® (FKM) 70 Shore A square profile Quad-Ring supplied with an inside diameter of 7.734 in (196.44 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 8.012 in (203.5 mm). A quad-ring resists spiral failure in reciprocating service thanks to its multi-lobe geometry.

This material stands up to many acids, engine and transmission fluids, and chlorinated solvents. That behavior comes from the compound itself: Viton® (FKM) is known for outstanding high-temperature capability, excellent resistance to compression set and permeation. Published continuous service range is -15°F (-26.1°C) to 400°F (204.4°C). Exposure to ketones and esters or low-molecular-weight organic acids will shorten service life.

You will find this material specified across semiconductor equipment, chemical processing, and high-temperature process equipment.

This item is sold individually under part number SV70265. Nominal inside diameter is listed as 7 3/4 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.