Definition - What does Elastomer mean?
An elastomer is a cross-linked chemical structure material made up of polymer chains adhered to one another by strong chemical bonds. Elastomers are used to coat corrosion-prone materials to prevent moisture access and the formation of corrosion-assisting compounds.
Corrosionpedia explains Elastomer
Elastomers contain strengthened intermolecular forces that prevent the penetration of corrosion-causing substances such as water and hydrogen sulfide.