I got some Ox-Gard. It is an electroconductive lubricant. Supposed to also prevent wasted energy in the body of the device. Wouldn't use anything else. No vaseline for me.
There are several brands available at your local hardware store.
Nilox is a good conductive lub also its cheap and you can buy it from Home depot.
Be careful with your
conductive greases, as they could cause a short if it transmits conductivity between the positive and the negative connections (like where they're really close to each other, such as the 510 connector).
If that conductive stuff bridges that tiny gap between the anode and cathode, you risk dangerously shorting your rig.
High current applications such as spark plugs use
dielectric grease, which means non-conductive, but this is where it gets confusing. Dielectric means: having the property of transmitting electric force without conduction; insulating: a medium or substance that transmits electric force without conduction; an insulator.
Our mods can be considered high-current connections, at least where these little batteries are concerned. Dielectric grease does not inhibit the flow of electricity - even though the definition sort of seems to imply that it would. It passes the current through when the metals touch, but insulates the current from traveling any further. It is my opinion that
dielectric grease should be used in vaporizer mods at their 510 connections and battery bottoms, as well as flashlights.
Dielectric for me, and I use a silicon based grease called SuperLube. Good luck to you if you choose to use a conductive grease. SuperLube is also FOODGRADE, which may be important with things that go in our mouths.