MS2500 is a two-component modified silicone sealant. The base and the hardening agent are mixed uniformly by professional mixing equipment in a mass ratio of 10:1, and then the product is squeezed into the required joints with a two-component special glue gun to solidify to form a stable elastomer. The product has excellent adhesion, weather resistance, durability, no precipitation pollution and other characteristics, and the surface can be painted after curing, which is suitable for waterproof sealing of related joints such as prefabricated buildings.