S-76 Tack Coat Primer is for use on properly prepared steel, aluminium or galvanized steel. S-76 is an anticorrosive strontium chromate base primer that is specifically designed for under water metal surfaces including hulls, running gear, and the lower units of outboards and I/O’s. It provides an excellent barrier to reduce pitting of the metal from galvanic corrosion. S-76 should be used in conjunction with another primer such as Tuff Stuff prior to applying antifoulant/topcoat.Application controls Method : Brush, roller or spray Induction/ Sweat-in Time : 30 minutes Pot Life : 3 hours