- primer surfacer
- The material for the resilient coating underneath the top paint coat which provides corrosion protection, protects the paint system from chipping caused by gravel, provides a smooth surface for the top paint coat, and serves as an adhesion promoter. A primer that contains a lot of solid material to fill small imperfections in the substrate (primer-surfacer must be sanded before applying paint over them)
Dictionary of automotive terms. 2015.