Q-168 FLUOROELASTOMER 75 Q RING

The QV70168 is an AS568-168 black Viton® (FKM) 75 Shore A Quad-Ring measuring an inside diameter of 7.237 in (183.82 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 7.443 in (189.05 mm). This quad-ring resists spiral failure in reciprocating service thanks to its multi-lobe geometry.

The compound resists aromatic hydrocarbons, many acids, and aggressive chemicals. That behavior comes from the compound itself: Viton® (FKM) offers very low compression set at elevated temperature, excellent resistance to compression set and permeation. Published continuous service range is -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 lower compressive load required to achieve a seal and a parting line located away from the sealing surface.

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

Order part number QV70168, sold individually. 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.