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post #9 of Old 12-03-2016
Maine Sail
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Re: Brass thru-hulls?

The big US manufacturers of seacocks & thru-hull fittings use 85-5-5-5 bronze almost exclusively. It has been the go-to bronze for seacocks as far back as the 1930's. I have many 85-5-5-5 seacocks out there beyond 50 years old. This list of manufacturers using 85-5-5-5 includes Groco, Apollo/Conbraco, Spartan, Buck-Algonquin and even defunct manufacturers such as Wilcocx-Crittenden... This is a far superior bronze than what the ISO/RCD builders use...

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-Maine Sail / CS-36T


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