Q-253 FLUOROELASTOMER 75 Q RING

Part number QV70253 is an AS568-253 black Viton® (FKM) 75 Shore A Quad-Ring with an inside diameter of 5.359 in (136.12 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 5.637 in (143.18 mm). A quad-ring provides a dual sealing band on each contact face for improved reliability.

As a material, Viton® (FKM) delivers the industry benchmark where nitrile reaches its thermal limit and very low compression set at elevated temperature. It resists aggressive chemicals, engine and transmission fluids, and aromatic hydrocarbons. Rated temperature range runs from -15°F (-26.1°C) to 400°F (204.4°C) in continuous service. Applications involving amines or hot water and steam call for a different compound. The profile itself contributes a parting line located away from the sealing surface and lower compressive load required to achieve a seal.

Typical settings include oil and gas, chemical processing, and aerospace.

QV70253 ships individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.