Description This Kwik Foam heavy-duty polyurethane insulating foam sealant works to fill and seal large gaps and cavities. This tan foam sealant has a flash point of 0 Degrees C with a specific gravity of 1.3. It begins to harden in 10 minutes to one hour and fully cures in 24 hours. This sealant is environmentally friendly and comes in a 340-gram can.
