AXEL STAINSEAL 916S is a solvent 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.