Silicone caulk is a type of adhesive sealant that can be used for a number of household and professional applications. Most silicone caulks and sealants are highly resistant to weather, temperature, water, and chemicals, making them versatile for indoor and outdoor use.

Silicone adhesive caulks are formulated to be flexible, elastic, and stable across many conditions, including heat and cold, which makes them very useful in construction and repairs. Most of them have a gel-like consistency, as opposed to the more glue-like texture of polymer-based adhesives. Also, unlike many super glues and ordinary sealants, silicone caulk must properly cure before full bonding is achieved. For most silicone sealants, this takes from 24 hours to several days when heavier coats are applied.