Anode caps are used for protecting the anode ends where the lead wire is connected to the anode. Protection of the connection between anode and lead wire is important to prevent premature failure of the system due to corrosion    causing lead wire to come out of the anode. The anode cap provides electrical insulation and stress relief to the connection. The special rubber based adhesive on the inside of the anode cap provides a water-tight seal for the anode.

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