white pu sealant 1.white pu sealant for joints of refrigeration , machinery, airport runway 2.high quality white pu sealant white polyurethane sealantCS-2000 white sealant is used for the sealing of the joints of the refrigeration compartment, machinery, airport runway, superhighway, and construction.CS-2000A is used for the adhesion of the metal plates and the framework of automobile and the ...