No Clamps Needed! Attaches and seals dust hose! Sealing the joints in your dust collection system just got easier.Isermal Silicone Tape stretches and bonds to itself to make an air-tight seal for plastic and metal dust joints, ducts, tool grips and more. Connect and seal dust joints and accessories without clamps. Isermal Silicone Tape contains no adhesive and won’t leave a sticky residue. Measures 1-1/2″ wide.