Tec/SYSTEM® Polyester Primer-Surfacer (5190) is a high build, fast drying primer that has excellent adhesion to metal, galvanized metal, aluminum, fiberglass, SMC, and body filler. Tec/SYSTEM® Polyester Primer-Surfacer has excellent filling properties and can be wet or dry sanded. Tec/SYSTEM® Polyester Primer-Surfacer does not require a precoat or sealing before topcoating.