Lacquer for waterproofing low voltage circuits

[wolram]

surprisingly low voltage circuits still function fully submersed in water if
they are protected with some coating.
They only fail when this coating breaks down.
Now if this submersion in water is not a designed feature (accidental), is
there some standard for the protection material?
How long it will take to decompose become porous.

 

[Danger]

I'm not exactly sure what the questions are.
There are certainly industry standards for waterproofing components if such is necessary. If this is something that you want to do yourself, just 'paint' your entire circuit with liquid latex or silicone sealant. Neither one will break down within your lifetime in a water environment. The 'bathroom' version of either will be even better in water, since they include fungicides to inhibit the growth of mold and whatnot.

 

[wolram]

Danger, looking for some standard (IP) rating, ok, circuits can be encapsulated but, that makes them throw away, i need a standard
for coatings that can be reap lied if say a microchip is replaced.

 

[Danger]

Ah, that puts it out of my field. As an amateur, however, I would still go with the route that I mentioned. Either of those sealants can easily be sliced off with a razor knife or X-Acto in the local area of the specific component, and then re-painted to seal it again.