Stone care system. Seals & protects! For use on granite, marble & other natural stone surfaces! Protects against stains. Excellent grout sealer! Water-based formula. Applies up to 100 sq ft. Helps maintain the natural look of stone & porous tile. Steel: please recycle. Rock Doctor Granite Sealer is for use on granite, marble and other natural stone surfaces. This water-based sealer is also excellent for use on grout. Rock Doctor Granite Sealer penetrates deeply to bond with natural stone and provides a long-lasting, natural looking barrier against moisture and other elements. 1-866-275-3536 (toll free). No CFCs: Contains no CFCs which deplete the ozone layer. www.rockdoctor.net.