Dielectric Grease protects electrical connections and wiring from salt, dirt and corrosion. Dielectric Grease extends the life of bulb sockets and prevents voltage leakage around any electrical connection. It also prevents spark plugs from fusing to boots. Use Dielectric Grease for modern high energy ignition systems.
It is an insulator which makes it NON-CONDUCTIVE. It helps to focus the direction of the electrical flow which is called electric polarization.