Q-158 FLUOROELASTOMER 75 Q RING

Ordered as QV70158, this is an AS568-158 black Viton® (FKM) 75 Shore A Quad-Ring with an inside diameter of 4.737 in (120.32 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 4.943 in (125.55 mm). The quad-ring provides a dual sealing band on each contact face for improved reliability.

It resists aggressive chemicals, many acids, and engine and transmission fluids. That behavior comes from the compound itself: Viton® (FKM) is known for long service life in hot, chemically aggressive environments, excellent resistance to compression set and permeation. Service temperature is rated from -15°F (-26.1°C) through 400°F (204.4°C). The profile itself contributes a parting line located away from the sealing surface and resistance to the spiral twisting that defeats round-section rings.

You will find this material specified across automotive fuel systems, high-temperature process equipment, and semiconductor equipment.

QV70158 ships individually. Unit weight is approximately 4.1984 g and nominal inside diameter is listed as 4 3/4 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application.