VpCI(r)-395 is Cortec's most durable anticorrosion primer. It not only promotes good surface adhesion between the metal and topcoats, but it also has greater strength as a 2K (two-component) primer. The extra effort that goes into mixing two parts together at the jobsite translates into greater durability because it allows crosslinking, i.e., greater chemical bonding, between the active ingredients in the primer.