In message ,
Roy Lewallen writes
JIMMIE wrote:
Ive see the center conductor of RG214 dissolved through with RTV.
The
corrosion on the associated Al/Cu joint was likewise disgusting.
Jimmie

And I've used the acetic acid-curing variety many times on bare copper
(wire and PC board traces) and aluminum, and not a hint of corrosion
when it was cut off long after. Besides the wide variety of
formulations, there may be other factors at work causing the
corrosiveness to vary so much.

Roy Lewallen, W7EL

I think you've been lucky (or are maybe mistaken about it being
acid-curing).

I have used silicone grease, but WD40 is more-readily available. It also
wets better, and creeps into the hidden nooks and crannies. I give
everything a good dowsing before and after assembly, assemble, wipe off
the surplus WD40, and seal with stretched self-amalgamating tape. Such
assemblies from over 30 years ago give every indication of lasting until
I am no longer in a position to be interested in amateur radio.
--
Ian