Black seacock

[Caladh]

Been out with a pal today on a Jeannau 40. Bronze Seacocks replaced 5 seasons ago have inside the boat gone black. Is this likely to be a problem or just oxidation which could be polished out - if you had time and inclination ?

 

[geem]

Been out with a pal today on a Jeannau 40. Bronze Seacocks replaced 5 seasons ago have inside the boat gone black. Is this likely to be a problem or just oxidation which could be polished out - if you had time and inclination ?

Bronze often goes black in a damp environment

 

[Plum]

Bronze often goes black in a damp environment

my DZR seacock in the engine compartment has also gone a very dark (nearly black) colour.

www.solocoastalsailing.co.uk

 

[lustyd]

Bronze often goes black in a damp environment

And cold metal in a humid environment gets damp with condensation. One of the reasons I like the TruDesign, no condensing water on cold metal so things are a bit more dry.

 

[geem]

And cold metal in a humid environment gets damp with condensation. One of the reasons I like the TruDesign, no condensing water on cold metal so things are a bit more dry.

Ditto Marelon valves.

 

[Snowgoose-1]

my DZR seacock in the engine compartment has also gone a very dark (nearly black) colour.

www.solocoastalsailing.co.uk

Wondering if electrical wires turn black for the same reason ?

 

[geem]

Wondering if electrical wires turn black for the same reason ?

Raw copper will turn black. I have seen untinned copper wires on my previous boat turn black for 2 metres up inside the insulation. The resistance goes so high that the conductor is no longer conducting. Scrap wires needing replacement.