Silica gel has good weather resistance and construction performance. As a kind of adhesive sealant, it has been widely used in the construction industry, which is more than other types of sealant. In recent years, a low modulus and high elongation two-component sealant has been developed, which is used for large-scale components such as precast concrete and curtain wall with large joint movement. Room temperature curing silica gel is also used for sealing the joints of asbestos cement board, the joints of bathroom bricks and the sealing of toilet appliances. With the decrease of rubber price in the future, the application scope will be further expanded, such as replacing asphalt and chloroprene rubber in the application of highway joints. The high temperature curing silica gel sponge strip is used as the sealing strip of doors and windows of buildings.