The SCS-002-SP Sealer Prime is a proprietary blend of a hybrid acrylic silane blended with a penetrating reactive nanoparticulate. Sealer Prime acts as a sealer and a primer for the SEI Anti-graffiti Coatings when applied to any mineral substrate. Sealer Prime ensures adhesion of the Anti-graffiti Coatings and the color integrity of mineral substrates. Sealer Prime builds a film and penetrates the surface to establish a water repelling barrier in the pores and in the subsurface. 5-gal Pail