Silicone is a multi-purpose sealant that has the largest operating temperature range (-76C to 600F). One component silicone sealants cure to a rubbery solid when exposed to moisture in the air.

Silicone sealants are excellent general-purpose sealants. They keep their elasticity and stability in extreme temperatures and is resistance to chemicals, moisture and weathering.

Ellsworth Adhesives supplies silicone sealants manufactured by Dowsil (Dow Corning).