Artisan(R) SEAL Penetrating Sealer (32oz) An easy to apply water-based, penetrating sealer and oil repellent that helps to maintain an etch-free, stain-free surface. Sealer can be used on polished marble, granite, limestone, shower walls, vanity counter tops and grout joints. Artisan SEAL penetrates deeply into the stone, forming an invisible, long lasting barrier, which inhibits water and oil staining, while maintaining the natural appearance of the stone.