Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

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Sea water coupling

Would there be galvanic action to the inside of a stainless steel sea water coupling with an O-Ring sealed hard anodized aluminum fitting.

Joe Karp
ST Production Systems - Farmingdale, New Jersey
2002

If there is no metal-to-metal contact, no. If the hard anodized surface remains intact, no. If the hard anodized surface is breached and even a little aluminum is exposed, and there is metal to metal contact, yes, aggressive galvanic action.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2002

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