• Protects bare metal panels and parts from corrosion after welding
• Zinc base draws away contact corrosion, leaving substrates strong
• Convenient aerosol spray application
• Dries in as little as 5 minutes before MIG welding for efficient throughput
• Formulated for minimum weld spatter, helping prevent shop damage
• Accepts 3M Cavity Wax Plus (PN 08852) and other 3M coatings on non-weld metal surfaces

3M Weld-Thru II is a convenient aerosol coating designed to prevent corrosion between welded metal surfaces. Featuring a zinc base that draws corrosion away from bare metals, it helps prevent costly comebacks due to corrosion at welds. Spray coating applies fast, resists weld spatter common to some weldable primers and dries in as little as 5 minutes, increasing shop efficiency and productivity.