1)Polyurethane Foam Caulking Sealant, 2)one-part, 3)moistural cure. 4)multi ... and, if necessary, painted and plastered. Polyurethane foam sealant will cure when moisture in the air reacts with the ... doorframes and walls. 3) waterproof,adiabatic,soundproof,heat-preserving,and insulating. 4) anti- erosion,no toxicity after cured. 5) ... and convenient installation. YA Polyurethane Foam Caulking Sealant