Questions re: sealing DIY dive lights

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What in the world is that cable gland???
 
Great another wiki know it all.

It takes CURRENT to actually preform electrolysis.
Galvanic corrosion - Wikipedia, the free encyclopedia
Please note the section on the bottom "Factors that influence galvanic corrosion"
Please note the term "current" is used in many points.
Please note that the area of parts effects corrosion rates.
Please not that Aluminum is one of those metals that forms a hard patina. That is what anodizing is.

Also, most water tight bulkheads that they are using for cable pass through are stainless.

Real sorry from me but you don't understand electrochemical basics at all!

- current it is not just another current you have in your mind !

- EDDY CURRENT begins in the metal parts under influence of electromagnet field
which must be alternating type(not DC as by galvanic series) . This current is normal
in High friquency fields and makes so called ''Skin effect''
( by my job as electroengineer in the lab I have studied sensors special eddy ;))

- first you have two parts of metal with different galvanic numbers (condition)
- parts causes electrochemical tension (volatage) between them
- than you must have resistance in metall ( Al2O3 which made anodization Al
known as eloxal process makes Alu hard but also made resistance from low -
very high and the electro tension can not go through)

- voltage and resistance causes CURRENT - not anyone but DC. Parts become
battery which melts material on higher galvanic ledder and brings it to the metal
with lower galvanic part. THAT IT IS CORROSION :shocked2:

tor example : if you squeeze SS backplate with iron vice then will SS become rusted !

Regards
 
Haha, we're not gonna talk about the cable gland. I'm not even sure we can call it that.
 

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