Primocon is an anti-corrosion primer specifically developed for use below the waterline on steel and aluminum. This versatile product can be overcoated with all International, Epifanes, and Hempel antifoulants and is ideal as a sealer for unknown antifoulants or as a bonding agent for antifoulants on fiberglass. Primocon can also be applied at low temperatures, making it particularly suitable for cast iron keels.