Dielectric is non-conductive. The stuff you're describing sounds like a contact enhancer and oxidation preventative. I'm no expert, so it's more of an inquiry than a statement. 

Chris.

Wysłane z iPhone'a

Dnia Mar 7, 2014 o godz. 12:00 John Collins <oldguyflier@YAHOO.COM> napisał(a):

> I have used a grease loaded with copper powder on radio antenna connections topside on my cruising sailboat. It blocked all corrosion about six feet above salt water and made a perfect connection. I covered it with rubber tape just to keep from getting it on my clothes. Bought it at an amateur radio store. 
> 
> John Collins
> S/V PRIMO (Panama)
> 
> Sent from my tiny piece of magic glass