The Stovebolt Site Forums The Shop Area The Electrical Bay Di-electric silicon grease?

Sure

It does not promote electrical conduction, it acts as a seal and helps to stop oxidation/corrosion (making a moisture/oxygen barrier) outside of the contact surface (which you want to be clean metal to clean metal). It is electrically non-conductive.

http://en.wikipedia.org/wiki/Silicone_grease

http://www.wisegeek.com/what-is-dielectric-grease.htm