[COE Dan]

The term "dielectric" by definition is non-conductive. The grease is designed to displace moisture or seal a connection from dirt/moisture that would create corrosion opportunities. It is really supposed to be applied to areas around a connection not between the conductive elements as it is non-conductive.

When applied to conductors, close fitting conductors usually displace enough of the dielectric grease to continue to function while providing some level of enhanced corrosion protection. There is a possibility that dielectric grease can reduce connection surface area.

An additional benefit is to seal out dirt which contains conductive materials that can create pathways to ground and a resultant “voltage leak”.

The Permatex website provides the following description for their dielectric grease:


"Protects electrical connections and wiring from salt, dirt, and corrosion. Extends the life of bulb sockets. Prevents voltage leakage around any electrical connection. Also prevents spark plugs from fusing to boots. Required for modern high energy ignition systems.”