Precision Brand Sof' Shoe shim solves angular soft foot alignment problems on motors, pumps, generators, turbines, and other plant machinery. Sof' Shoe shim is made of a proprietary elastomer which has unique flow and set characteristics to fill irregular gaps Sof' Shoe shim compresses 12% permanently over a 10 to 14 day period conforming to any irregularity on a foot and/or base The yellow Sof' Shoe shims are .045" thick and compress to .040" The blue Sof' Shoe shims are .020" and compress to .0175" The thickness tolerance of Sof' Shoe shim is ±.005" Sof' Shoe shim is stable to 225 degrees F For more technical information on Sof' Shoe shim and angular soft foot, contact Newman Tools