Great Stuff Multi-purpose Silicone is a one-component, moisture-curing, 100% RTV acetoxy silicone sealant. It is high strength and has exceptional flexibility, this versatile sealant is perfect for both home improvement and new construction tasks. It's ideal for sealing windows, doors, siding, trim, molding, baseboards, vents, as well as spaces in basements and attics. Additionally, it's suitable for applications around wires, pipes, countertops, RVs, gutters, garages, sheds, kitchens, and baths.