VHT Prime Coat is specially formulated to fill scratches or pin holes caused by sanding or body fillers to form a strong corrosion barrier. It is a multi-purpose product, and can be used on metal, fiberglass, masonry, wood and most plastic surfaces. It is ideal for automotive, marine, aviation, home, farm, and industrial use. Dry Time Primer will dry in 30-45 minutes for sanding purposes. Applications Use before the paint coating, to fill in small scratches, or to increase the bond.