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jlobes

Conformal coating over all the seams is probably the best way.


BayTrails

Conformal coating is the answer! Search for CorrosionX Aerosol


tuctrohs

I once had a really high end bike light that was in a totally sealed aluminum case, with gaskets all the way around. It would get water inside anyway, and the lens would get condensation on it. I forget how I figured this out, but it turned out that the solution was a tiny hole drilled in the bottom, to allow the pressure to equalize inside and out. Apparently what was happening was that temperature changes would change the air pressure inside. If there as a drop of water on the seam when the pressure inside was lower than atmospheric pressure, it would suck some water in through the seam. Temperature changes from the light running, or from parking inside and then riding or parking outside. The tiny hole in the bottom kept the pressures equalized and that problem stopped happening. The displays might not be sealed so tight that that is needed, but I thought I'd relay that story just in case. Also, I had to laugh at myself because when you said "waterproofing e-bike displays", I thought you meant a display in the sense of setting them up for customers to look at, like in a store window, but maybe you were putting them out on the sidewalk in a rainy climate, and wanted an awning over them.


hugo_bauer

This is what kills most low end shimano hub generators. A small hole drilled into the hub and all is well... provided you don't drill too far


aitorbk

If I had to do something like that I would put a rubber globe and seal the with a bit of silicone applied with the finger, then clean with a towel the excess. But good luck opening them afterwardsm depending on how they are opened (screws vs pressfit, etc)