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Ted Mooney, P.E. RET
Pine Beach, NJ

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Plating corrosion

Plating getting rusted while traveling in the sea for about an month. Black spots appears.(zinc plating yellow passivation)can you give explanation about electrolytic cleaning.

R.Balaji
- Chennai

Difficult to remove these black spots, you will have to do a better job of preserving the finish by sealing with a post dip of some kind, or sealing in plastic bags with an inert atmosphere.

Tom Pullizzi
Falls Township, Pennsylvania

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