A transparent oil and water repellent for use on most stone materials. Unlike most other sealers, Zeta Seal also protects against acid stains such as wine, vinegar, and citrus juice. Zeta Seal has the highest concentration of sealing fluro-polymers available. This high concentration makes it ideal for use on porous surfaces such honed or flamed granite and marble, flagstone, sandstone, shellstone, concrete and porous tile. It protects against most stains, is easily applied, and does not change the appearance of the stone. This product can also be used on engineered stone, masonry, brick, terrazzo, grout joints, DRYVIT, stucco and various concretes. It is not for us on plastics. Zeta Seal offers the highest level of protection you can get for your stone.