SP-100 is Double sided self adhesive polyurethane foam with high density Exclusive use of high-grade pure acrylate adhesive ensures excellent shear resistance on surface of glass, steel, and anodized aluminium. This tape excels by its paramount weathering resistance and by its outstanding resistance against ultra-violet radiation. Sp -100 spacers have an open cell structure and closed cell tapes  ,It allows air and moisture to reach the silicon to allow optimum curing .