568-426 FKM 75 SQUARE CUT RINGS

SV70426 is an AS568-426 black Viton® (FKM) 70 Shore A square profile Quad-Ring with an inside diameter of 4.6 in (116.84 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 5.15 in (130.81 mm). In service, this quad-ring delivers lower friction and better sealing stability than a comparable round-section o-ring.

The material holds up against aggressive chemicals, aromatic hydrocarbons, and petroleum oils and fuels. That behavior comes from the compound itself: Viton® (FKM) is known for very low compression set at elevated temperature and the industry benchmark where nitrile reaches its thermal limit. Service temperature is rated from -15°F (-26.1°C) through 400°F (204.4°C).

Maintenance and OEM teams specify it across semiconductor equipment, chemical processing, and high-temperature process equipment.

This item is sold individually under part number SV70426. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.