Q-121 FLUOROELASTOMER 75 Q RING

Ordered as QV70121, this is an AS568-121 black Viton® (FKM) 75 Shore A Quad-Ring built to an inside diameter of 1.049 in (26.64 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 1.255 in (31.88 mm). The quad-ring provides a dual sealing band on each contact face for improved reliability.

Viton® (FKM) is widely chosen for excellent resistance to compression set and permeation, very low compression set at elevated temperature. The compound resists chlorinated solvents, engine and transmission fluids, and petroleum oils and fuels. Rated temperature range runs from -15°F (-26.1°C) to 400°F (204.4°C) in continuous service. Exposure to ketones and esters or hot water and steam will shorten service life. The profile itself contributes lower compressive load required to achieve a seal and resistance to the spiral twisting that defeats round-section rings.

Maintenance and OEM teams specify it across chemical processing, automotive fuel systems, and oil and gas.

QV70121 ships individually. Unit weight is approximately 0.9788 g. Check the compound against your process media, pressure and temperature before committing to a design. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.