Monofil SMART+ Primer is a fast drying aerosol acrylic primer filler for the repair/refinish of metallic surfaces. Can also be used as a weld-through primer for spot welding operations. Sprays to give a tough acrylic primer coating. It is compatible for spraying over acrylic and cellulose, but not alkyd as wrinkling may occur. It can be overcoated with cellulose, acrylic, alkyd, P/U-alkyd and epoxy.