Sealants are

Speaking more accurately that modern high -quality polyurethane sealants are characterized by the following properties:

— They have incredibly good resistance to corrosion. — Polymerization occurs under a certain effect of wet air, but at the same time there is a creation of a strong and high -quality seam, which has excellent sealing. — Materials are completely resistant to ultraviolet radiation, they are not amenable to the effects of salts, acids and various cracks.