Gardner Bender 1 lb. Duct Seal Insulator

The Gardner Bender 1 lb. Duct Seal Insulator is a malleable, non-conductive compound designed for sealing electrical raceway connections, conduit openings, gaps, and holes. It effectively seals against air, drafts, dust, moisture, and noise to maintain protective integrity in electrical systems. This versatile sealing compound remains flexible and easy to mold during installation, providing a clean, dependable barrier for indoor and outdoor electrical and general construction applications.