Its an self adhesive and is made from butyl compound.Its butyl-rubber based, two-sided, self-adhesive sealant tape with good elastic properties. Adhesiveness:Butyl rubber has excellent adhesion to most of the material such as all of Composite material, FRP, metal, wood, glass, non-ferrous, concrete, etc. UV Protection:Excellent resistance against UV rays.One side laminated is helping to protect its characteristic when exposed to direct sunlight.Application temperature:0 °C to 35 °C.