Not Recommended-Conductive grease use on electrical connectors
LINGJIONG Electric Contact Grease-Conductive Gel And Lubrication | General Purpose Dielectric Paste | Keeps Metals Free Of Rust Corrosions | Grease For Household Appliances Power Switches : Amazon.co.uk: DIY & Tools
Carbon Conductive Grease
Envirotec Industries Silicone electric dielectric grease
Permatex 81150 Dielectric Tune-Up Grease, Protects connections from Salt, Dirt and corrosion,Prevent Spark plugs & Boot damage 1 x 9g : Amazon.co.uk: Automotive