AXEL STAINSEAL 916W is a water-based silane / siloxane / fluoropolymer mixture, specially formulated for use as an impregnator. It is designed to impart water and oil repellency to easy-care finishes of natural stone or unglazed ceramic and brick tiles, exterior marble, granite stonework, or other surfaces where water and oil repellency is required. It is specially blended to give a high-water repellency action, reduce staining and efflorescence.