A quick-drying, high-build, clear polyurethane primer for use before varnishing or painting. International Fast Dry Clear Wood Sealer is designed for use under International one-and two-part varnishes and finishes and allows the user to apply up to four coats per day, reducing overall project time. The low-viscosity, chemically cured product penetrates deep into the wood, filling the woodgrain, sealing the surface, and providing a perfectly smooth impact, scratch and wear-resistant surface, ready for overcoating.