568-167 FKM 75 SQUARE CUT RINGS

This square-cut ring is supplied in AS568-167 black Viton® (FKM) 70 Shore A measuring an inside diameter of 6.987 in (177.47 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 7.193 in (182.7 mm), catalogued under part number SV70167. It presents a flat rectangular section that cannot roll or twist in its groove, making it a dependable static seal.

Viton® (FKM) is specified here for very low compression set at elevated temperature and long service life in hot, chemically aggressive environments. Expect good resistance to engine and transmission fluids, many acids, and petroleum oils and fuels. Rated temperature range runs from -15°F (-26.1°C) to 400°F (204.4°C) in continuous service. Applications involving low-molecular-weight organic acids or ketones and esters call for a different compound. The profile itself contributes simple lathe-cut manufacture at low tooling cost and greater resistance to extrusion than a round section of the same size. Note that a square section is less suited to high-speed rotary service, where the larger contact area raises friction and heat.

Common environments for this compound include semiconductor equipment, oil and gas, and automotive fuel systems.

Order part number SV70167, sold individually. Review your operating media and conditions against this specification before installation.