3M WP357 ZINC RICH WELD THROUGH PRIMER 357g
A premium zinc enriched primer designed to restore original corrosion protection to steel panels or structures repaired by welding. It’s high zinc content provides a positive weld without splitting. It will not burn away during the welding process and delaminate around the edges of the weld afterwards, ensuring maximum corrosion protection. It is fast drying, resists sagging and settling and is water resistant after 15 minutes and heat resistant to 500°C.