Double-sided Sealing Butyl Tape is an environmentally friendly non-curing self-adhesive waterproof sealant made of butyl rubber as the main material, with other additives, processed through a special process. It has excellent adhesion and can strongly adhere to various surfaces. And it has the functions of sealing, waterproof- ing and protection to the adhered surface. Because it does not contain solvents, it does not shrink, does not emit harmful gases, is easy to construct, and is an indispensable sealing material in construction.