Permatex liquid metal filler is an easy-to-use filler that allows for drilling, filing, sanding, and painting. It forms a long-lasting, metal-tough bond and works on metal, wood, and concrete, with excellent adhesion to galvanized metal. This plaster will also repair cracks or porosity leaks in cast metal parts and fills small holes and perforations. Permatex liquid metal filler resists water, oil, and gasoline, making it ideal for multiple applications!