- Advanced Polymers International's Gel-Tac adhesives are used to manufacture a variety of products such as tapes, labels, photo albums, wallpaper and direct mailers. These water-based adhesives, formulated using acrylic microsphere technology, feature properties of repositionability, removability and stable tack over time. All of API's adhesives are non-toxic, non-staining, clean and safe. API ...www.msphere.com