A non-bleeding, anti-corrosive primer, Primocon® Aerosol provides an excellent barrier for underwater metal surfaces, reducing galvanic corrosion. You can use before applying Trilux® 33 Aerosol or Trilux® 33. A non-bleeding, anti-corrosive primerProvides an barrier on underwater metal surfaces, reducing galvanic corrosionFor use on aluminum outdrives and outboards, stainless steel, bronze props and shafts