Auto Parts High Temperature Rubber X Ring Buna Fuel Resistant ISO9001 FDA Quad-Ring Brand Seals ORK pioneered the design and production of four-lobed seals with the Quad-Ring Brand seal design. These seals are used today around the world for a wide variety of static and dynamic sealing applications. Avoiding Spiral Twist To minimize breakaway friction, an O-Ring groove must be wide enough to allow rolling or twisting of the seal. In the long stroke of a reciprocating seal