In organosilicon and polymer chemistry, a silicone or polysiloxane is a polymer composed of repeating units of siloxane. They are typically colorless oils or rubber-like substances. Silicones are used in sealants, adhesives, lubricants, medicine, cooking utensils, thermal insulation, and electrical insulation. Some common forms include silicone oil, grease, rubber, resin, and caulk.
Silicone caulk can be used as a basic sealant against water and air penetration.
This silicone rubber folding chessboard resists creasing and wrinkling.
Silicone caulks and rubber components are often used in automotive applications.
Silicone is often used to seal maintenance access openings in aerospace equipment.
Organosilicon chemistry is the study of organometallic compounds containing carbon–silicon bonds, to which they are called organosilicon compounds. Most organosilicon compounds are similar to the ordinary organic compounds, being colourless, flammable, hydrophobic, and stable to air. Silicon carbide is an inorganic compound.
Silicone caulk, commercial sealants, are mainly composed of organosilicon compounds mixed with hardener.