1 1/2" x 5' Black 3M Scotchfil Electrical Putty $272.29 1 1/2" x 5' Black 3M Scotchfil Electrical PuttyCan be wrapped, stretched or molded around irregular shapes for a quick, smooth insulation buildup.Insulates non-flat surfaces such as fittings and valves. Electrical grade, rubber-based, self-fusing putty... Add to Cart