Newshound wrote:
Actually graphite would be fine as long as you didn't plaster it over
the
insulator.

I doubt it. Even if applied with due care it will spread, turning every
insulator into an insulation test failure.


Silicone oil/grease will stand 300 C or so and the cap should be
cooler than that.

Thats what I'd pick if I were unwiling to just not do them up too
tight.


NT