Q-444 FLUOROELASTOMER 75 Q RING

APG stocks the QV70444, an AS568-444 black Viton® (FKM) 75 Shore A Quad-Ring built to an inside diameter of 7.725 in (196.22 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 8.275 in (210.19 mm). A quad-ring delivers lower friction and better sealing stability than a comparable round-section o-ring.

The material holds up against aggressive chemicals, chlorinated solvents, and petroleum oils and fuels. Viton® (FKM) is known for the industry benchmark where nitrile reaches its thermal limit and very low compression set at elevated temperature. Rated temperature range runs from -15°F (-26.1°C) to 400°F (204.4°C) in continuous service. The profile itself contributes resistance to the spiral twisting that defeats round-section rings and two sealing bands per contact face rather than one.

Typical settings include aerospace, automotive fuel systems, and chemical processing.

QV70444 ships individually. Unit weight is approximately 49.058 g and nominal inside diameter is listed as 7 3/4 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.