568-221 FKM 75 SQUARE CUT RINGS

SV70221 is an AS568-221 black Viton® (FKM) 70 Shore A square profile Quad-Ring built to an inside diameter of 1.421 in (36.09 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 1.699 in (43.15 mm). In service, this quad-ring provides a dual sealing band on each contact face for improved reliability.

The material holds up against petroleum oils and fuels, aggressive chemicals, and aromatic hydrocarbons. That behavior comes from the compound itself: Viton® (FKM) delivers long service life in hot, chemically aggressive environments and very low compression set at elevated temperature. Rated temperature range runs from -15°F (-26.1°C) to 400°F (204.4°C) in continuous service. Verify compatibility before use with low-molecular-weight organic acids or amines.

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

Stocked as SV70221 and sold individually. Nominal inside diameter is listed as 1 7/16 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application.