568-160 FKM 75 SQUARE CUT RINGS

Ordered as SV70160, this is an AS568-160 black Viton® (FKM) 70 Shore A square profile Quad-Ring supplied with an inside diameter of 5.237 in (133.02 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 5.443 in (138.25 mm). The quad-ring seats in a standard o-ring gland while offering improved dynamic performance.

Expect good resistance to petroleum oils and fuels, engine and transmission fluids, and chlorinated solvents. That behavior comes from the compound itself: Viton® (FKM) is specified for the industry benchmark where nitrile reaches its thermal limit and very low compression set at elevated temperature. Continuous operating temperature is published at -15°F (-26.1°C) to 400°F (204.4°C).

It sees regular use in aerospace, chemical processing, and high-temperature process equipment.

Reference part number SV70160 when ordering; the item is sold individually. Nominal inside diameter is listed as 5 1/4 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.