Do locksets tarnish on doors and do they have to be caulked to prevent that?

Brass locksets set up an electrochemical reaction with the zinc of electrogalvanized STEEL doors. It is a small battery. That will tarnish the locksets. Lock companies try to avoid this with plastic rings behind the escutcheon plates or application of caulk anything to break the electrical contact between the two: brass and zinc. FIBERGLASS DOORS DO NOT EXPERIENCE THE REACTION. No preventative action is needed.

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