Sweat-Free Pipe Insulation Spray. An Aerosol Spray On Insulation Specifically Developed For Cold Water Pipes, Refrigeration and Air Conditioning Lines. Stops Sweating and Dripping Problems. Dries To a Clean, White, Flexible and Water-Resistant Coating. Adheres To Galvanized, Black Iron, Steel, Brass, Copper and PVC Piping.