> > You could fill the connector with a non-curing silicone grease


A good choice - although Vaseline which you mention has certainly seen use
in this sort of application. Works OK on car battery terminal too. Silicon
grease is available by the tube at many electrical wholesalers. Handy for
general use.

You can get thinnish silicon spray but in your case filling the connector
with Vaseline like density grease is probably preferred.

In NZ ARANDEE chemical make (made?) a food grade Silicon Grease which can be
used just about anywhere. It's an excellent insulator as long as you don't
exceed its break down temperature :-( . I used some on terminals in a high
temperature (170 C) location on mains connections in some industrial
equipment. It broke down under combined heating and localised heating
stresses. It produced a nice electrically conductive mix which then provided
a nice ground path for mains which ...... . Very spectacular.

        RM

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