Best water "proofing" techniques?

I personally would not use silicone for that.

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I bought some on amazon in the brush on form. Many different versions exist some of which dry with just air dry and others require an oven. There are spray on versions but they’re red and are bad for circuit boards IMO

Here is the stuff i bought which burns off with a soldering iron and YOU NEED TO USE IT OUTSIDE

https://www.amazon.com/gp/product/B07B8RY7M6/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Smells horrible and is the same as opening and pouring out like 5 bottles of nail polish at once in a small room.

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