Water Based - Tough, Durable finish - Ideal for decoupage projects - Non yellowing. Water-Based Clear Sealers provide a deep, rich Durable coating in gloss, satin or matt finishes. Ideal for finishing ceramics, decorative painting, floral and craft projects. Plasti-kote Clear Sealers are perfect for sealing decoupage projects. They can also be used on wood, metal, porcelain, plaster and most paintable surfaces to give durability and protection to any interior craft project.