Caulks, sealants, and gasket makers are compounds that fill gaps and seal mating components to keep out contaminants and prevent leaks. Caulks and sealants fill small gaps, seams, and joints around bathroom fixtures, or window and door molding to provide a finished look and improve energy efficiency by sealing holes where heat and cold air could escape. Spray foam sealants expand to fill wide gaps, such as those found around door frames and pipe. Gasket sealants and makers join two mating surfaces together, such as flanged components, to seal the bond and prevent leaks. Pipe sealants prevent leaks and loosening in pipe joints due to vibration, and seal out contaminants to prevent corrosion. Valve sealants protect valves from outside contaminants and prevent corrosion on internal components by filling in joints to seal out media flowing through the pipe.