PC-7 is the tough job epoxy. This paste epoxy was formulated for maximum bonding power.When mixed,components A(grey) and B(Black) reacts to form a bond of tremendous strength.PC-7 formulation provides extended working time,for large and critical jobs,Which allows the user to reposition work or make changes.PC-7 Epoxy is also resistant to mild acids,caustics,detergents,gasoline,fuel oil,salt and fresh water.