Experience less waste, less mess and the same great performance of GREAT STUFF Foam Sealant with an improved dispensingtechnology and new look. Can be reused, doesn t drip and allows better control. Reduce drafts and save energy. Ready-to-use polyurethane insulating foam sealant expands to take the shape of gaps, creating a long-lasting, airtight and water-resistant seal. It is a simple, cost-effective solution to improve energy efficiency.