Stuart Longland wrote in
:

I can't remember the details, but I
think he found a part-answer in using lots of PFPE grease to exclude
water. The stuff is often used on vehicles because it tends to stay put
and not form a grinding paste with all the grit that lands on it.

Interesting concept, I wonder how that affects conductivity…


My last post didn't interpret you correctly, I think. Krytox is a light
grease, it's firm but has a low vicosity. When two moving parts meet it tends
to part between them rather than goop between them, hence beign best to use a
good chunk of it. It's easily displaced under the pressure of metal contacs
so I doubt it would harm the electrical contact. It's also white, making it
very easy to examine for gubbins and grit, etc.