Stop rust and corrosion POR-15® is the product that changed car restoration permanently and is used by manufacturers world-wide to protect their factories from rust and corrosion. POR-15's non-porous coating keeps moisture away from metal permanently. The secret lies in POR-15's curing process. Most paints dry through evaporation, but POR-15 dries faster when moisture is present. Now add to that POR-15's incredible hardness, toughness, and flexibility and you have a coating that is practically indestructible. POR-15 is great for auto restoration, but it's also a state-of-the-art concrete preservative and floor coating. Try the many uses of POR-15® and you'll understand why this incredible product is now sold in 52 countries around the world!