1. Classified according to use, it can be divided into construction sealants, automotive sealants, insulation sealants, packaging sealants, mining sealants and other types.

2. According to the performance classification after construction, it can be divided into two types: curing sealant and semi-curing sealant. Among them, curing sealant can be divided into rigid and flexible. Rigid sealant solidified after curing or solidification, rarely It has elasticity and cannot be bent. Usually the seams cannot be moved. The flexible sealant has elasticity and softness after vulcanization. Non-curing sealant is a soft coagulant sealant that keeps the tackiness tackifier from migrating to the surface after construction.