Automotive construction, industry organizations and OEMs alike specify the use of cavity wax to prevent corrosion in vehicle repairs. 3M™ Cavity Wax Plus 08852 is a simple and effective way to ensure corrosion protection, one of the most important parts of automotive repairs.Self-healing, corrosion protection for inner body panels, frame rails and structural enclosures.When used according to directions 3M™ Cavity Wax Plus delivers the right amount of flow and wicking, providing consistent and uniform protection for your repair.{Eliminates the need for using antiquated and messy bulk spray technology to apply corrosion protection to a vehicle.}.For coating the inside of installed sheet metal panels use 3M 8851 Applicator Wand Kit