568-216 FKM 75 SQUARE CUT RINGS

APG stocks the SV70216, an AS568-216 black Viton® (FKM) 70 Shore A square profile Quad-Ring measuring an inside diameter of 1.109 in (28.17 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 1.387 in (35.23 mm). A quad-ring seats in a standard o-ring gland while offering improved dynamic performance.

Expect good resistance to aggressive chemicals, petroleum oils and fuels, and engine and transmission fluids. That behavior comes from the compound itself: Viton® (FKM) is widely chosen for outstanding high-temperature capability and very low compression set at elevated temperature. Published continuous service range is -15°F (-26.1°C) to 400°F (204.4°C). It is not the right choice where ketones and esters or low-molecular-weight organic acids are present.

Maintenance and OEM teams specify it across automotive fuel systems, semiconductor equipment, and oil and gas.

Order part number SV70216, sold individually. Unit weight is approximately 1.812 g and nominal inside diameter is listed as 1 1/8 inch. Check the compound against your process media, pressure and temperature before committing to a design. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.