Q-245 FLUOROELASTOMER 75 Q RING

This quad-ring is supplied in AS568-245 black Viton® (FKM) 75 Shore A measuring an inside diameter of 4.359 in (110.72 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 4.637 in (117.78 mm), catalogued under part number QV70245. It delivers lower friction and better sealing stability than a comparable round-section o-ring.

The compound resists petroleum oils and fuels, chlorinated solvents, and aromatic hydrocarbons. Viton® (FKM) is widely chosen for the industry benchmark where nitrile reaches its thermal limit and long service life in hot, chemically aggressive environments. The material carries a published service range of -15°F (-26.1°C) to 400°F (204.4°C). Applications involving hot water and steam or amines call for a different compound. The profile itself contributes resistance to the spiral twisting that defeats round-section rings and two sealing bands per contact face rather than one.

Common environments for this compound include oil and gas, automotive fuel systems, and aerospace.

Stocked as QV70245 and sold individually. Unit weight is approximately 7.2563 g. Review your operating media and conditions against this specification before installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.