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Butyl sealant uses butyl rubber as the main raw material, along with other additives. Using advanced processing techniques, it is made into a permanently non-curing self-adhesive water-proof sealant, with strong adhesion to the surface of various materials. At the same time, it has excellent weather resistance, aging resistance and water resistance, rendering functions of sealing, shocking absorption and protection on the adhered surface. Its shelf life is as long as more than 15 years.