Q-258 FLUOROELASTOMER 75 Q RING

QV70258 is an AS568-258 black Viton® (FKM) 75 Shore A Quad-Ring supplied with an inside diameter of 5.984 in (151.99 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 6.262 in (159.05 mm). In service, this quad-ring resists spiral failure in reciprocating service thanks to its multi-lobe geometry.

Viton® (FKM) is valued for long service life in hot, chemically aggressive environments and very low compression set at elevated temperature. This material stands up to engine and transmission fluids, aggressive chemicals, and petroleum oils and fuels. Service temperature is rated from -15°F (-26.1°C) through 400°F (204.4°C). Verify compatibility before use with hot water and steam or ketones and esters. The profile itself contributes resistance to the spiral twisting that defeats round-section rings and two sealing bands per contact face rather than one.

Maintenance and OEM teams specify it across semiconductor equipment, oil and gas, and aerospace.

This item is sold individually under part number QV70258. Unit weight is approximately 9.4704 g. Application requirements vary, so validate compatibility with your process conditions prior to installation.