Loctite Clear Silicone is a multipurpose adhesive and sealant that creates a permanent, waterproof, protective seal—ideal for metal, glass, rubber, tile, and porcelain.Designed for indoor and outdoor use, Loctite Clear Silicone Waterproof Sealant can repair everything from electrical connections to boot seams, stop leaks in wet weather, and even seal saltwater or freshwater aquariums. This all-season sealant creates durable, flexible bonds that resist extreme temperatures and impact, ensuring it won’t crack, peel, or shrink.Excellent for use on imperfect surfaces and for filling gaps, it bonds ABS, glass, ceramic, porcelain, wood, aluminum, stainless steel, cultured marble, fiberglass, granite, vinyl tile, and some rubbers and plastics.Loctite Clear Silicone Waterproof Sealant is aquarium-safe and can be used for sealing or repairing sinks, tubs, aquariums, plumbing fixtures, door frames, windows, vents, toys, appliances, gaskets, weather-stripping, the outside of fireplace doors, shoes, and boots.Not recommended for use on the following plastics: polyethylene, polypropylene, polytetrafluoroethylene (PTFE), polymethyl methacrylate (PMMA), polycarbonate, or PVC. Also not recommended for use on marble, limestone, cement, concrete, brass, copper, magnesium, iron, zinc, or galvanized metals.