How to determine the service life of polyurethane seals？
According to the shelf life and usage, if there is aging, it should be replaced in time. Such sealants have high tensile strength, excellent elasticity, abrasion resistance, oil resistance and cold resistance, but water resistance, especially alkali resistance, is not good. Can be divided into heating vulcanization type, room temperature vulcanization type and hot melt type. Among them, the room temperature vulcanization type has a single component and a two component. It is widely used as a caulking sealing material for buildings, squares, and highways, as well as for automotive manufacturing, glass installation, electronic filling, submarines, and rockets.
