Q-259 FLUOROELASTOMER 75 Q RING

The QV70259 is an AS568-259 black Viton® (FKM) 75 Shore A Quad-Ring supplied with an inside diameter of 6.234 in (158.34 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 6.512 in (165.4 mm). This quad-ring delivers lower friction and better sealing stability than a comparable round-section o-ring.

Viton® (FKM) offers excellent resistance to compression set and permeation, outstanding high-temperature capability. The compound resists petroleum oils and fuels, chlorinated solvents, and many acids. Rated temperature range runs from -15°F (-26.1°C) to 400°F (204.4°C) in continuous service. Exposure to amines or low-molecular-weight organic acids will shorten service life. The profile itself contributes two sealing bands per contact face rather than one and resistance to the spiral twisting that defeats round-section rings.

Common environments for this compound include high-temperature process equipment, semiconductor equipment, and chemical processing.

Reference part number QV70259 when ordering; the item is sold individually. Unit weight is approximately 9.794 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.