This self cross-linking acrylic primer is designed for construction and maintenance applications and is engineered for surfaces where rust and corrosion resistance is critical. Pro Industrial Pro-Cryl Universal Primer is a water-based alternative to solvent-based metal primers. It can be used on all bare steel, aluminum and galvanized substrates and is ideal for structural steel, machinery, piping or equipment found in schools, hospitals, hotels, commercial buildings and industrial sites.