*X RING FKM 75 D -353 SIZE

APG stocks the QV70353, an AS568-353 black Viton® (FKM) 75 Shore A quad profile Quad-Ring measuring an inside diameter of 4.975 in (126.37 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 5.395 in (137.03 mm). A quad-ring seats in a standard o-ring gland while offering improved dynamic performance.

Viton® (FKM) is specified here for very low compression set at elevated temperature, excellent resistance to compression set and permeation. Expect good resistance to chlorinated solvents, engine and transmission fluids, and petroleum oils and fuels. Service temperature is rated from -15°F (-26.1°C) through 400°F (204.4°C). Applications involving ketones and esters or low-molecular-weight organic acids call for a different compound.

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

Reference part number QV70353 when ordering; the item is sold individually. Unit weight is approximately 18.886 g and nominal inside diameter is listed as 5 inch. Check the compound against your process media, pressure and temperature before committing to a design. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.