DEHCO 16-5625 Tape This natural colored putty tape is a heavy, flexible, non-hardening butyl material that remains pliable as packaged It releases easily from its silicone-treated backer For use under moldings; around windows, doors and vents It can be used to seal and waterproof overlapping metals and can be easily shaped and formed to seal difficult areas Gray, 1/8 inch x 1 inch x 30 feet