GALV-A-GUARD provides a zinc film on metal surfaces that seals out moisture and prevents rust and corrosion by sacrificial galvanic action. It is highly resistant to water, acid and salt atmospheres. GALV-A-GUARD can be used on structural steel and wire, truck and auto bodies, gutter and down spouts, boats, trailers, docks, farm and road equipment, signs, fencing, tanks, piping, fans, ducts, culverts, air conditioning units, ornamental and antique metals, dairy equipment and oil rigs.