Q-231 FLUOROELASTOMER 75 Q RING

Ordered as QV70231, this is an AS568-231 black Viton® (FKM) 75 Shore A Quad-Ring built to an inside diameter of 2.609 in (66.27 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 2.887 in (73.33 mm). The quad-ring seats in a standard o-ring gland while offering improved dynamic performance.

Expect good resistance to aromatic hydrocarbons, many acids, and aggressive chemicals. That behavior comes from the compound itself: Viton® (FKM) delivers excellent resistance to compression set and permeation, very low compression set at elevated temperature. Published continuous service range is -15°F (-26.1°C) to 400°F (204.4°C). It is not the right choice where low-molecular-weight organic acids or ketones and esters are present. The profile itself contributes lower compressive load required to achieve a seal and two sealing bands per contact face rather than one.

Maintenance and OEM teams specify it across aerospace, high-temperature process equipment, and automotive fuel systems.

QV70231 ships individually. Unit weight is approximately 4.088 g and nominal inside diameter is listed as 2 5/8 inch. 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.