568-133 FKM 75 SQUARE CUT RINGS

APG stocks the SV70133, an AS568-133 black Viton® (FKM) 70 Shore A square profile Quad-Ring measuring an inside diameter of 1.799 in (45.69 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 2.005 in (50.93 mm). A quad-ring seats in a standard o-ring gland while offering improved dynamic performance.

Expect good resistance to chlorinated solvents, engine and transmission fluids, and aromatic hydrocarbons. That behavior comes from the compound itself: Viton® (FKM) is valued for outstanding high-temperature capability, excellent resistance to compression set and permeation. Service temperature is rated from -15°F (-26.1°C) through 400°F (204.4°C). It is not the right choice where amines or ketones and esters are present.

Maintenance and OEM teams specify it across aerospace, automotive fuel systems, and high-temperature process equipment.

Stocked as SV70133 and sold individually. Nominal inside diameter is listed as 1 13/16 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.