Silicone sealant is a type of adhesive, most often used to create a watertight or airtight seal at the joint between two surfaces. You might also see silicone sealant referred to as silicone glue in some places.
Silicone sealants are commonly used to bind surfaces such as plastic, metal, and glass together. For example, aquariums are often sealed with silicone. Windows are often sealed to frames with silicone adhesive since it is weather resistant.
It can be applied to create watertight seals when glass, ceramic, porcelain, wood, vinyl tile, and more. For construction projects such as sealing gaps or cracks around windows, door frames, baseboards, walls, and molding, a caulk that combines acrylic and silicone is a smart choice.