Paint metal surfaces to stop rust from starting and prevent existing rust from spreading. Scrape rusty areas clean before application. Although primer is not required for use on all materials, it can be used to prepare any surface to maximize the life and corrosion resistance of paint.

Silicone paint stops corrosion on high-temperature surfaces, such as smokestacks, incinerators, heaters, and heat exchangers. To apply paint with a 2-hour overall dry time, spray paint on, and then increase the temperature two to three times (450° to 650° F), allowing surface to cool between firings.

Paint in an aerosol can does not require a primer.