About This Item: Seal Out Moisture and Corrosion From the Elements – Permatex Dielectric Grease Protects Terminals, Wiring, and Other Electric Connections From Salt, Dirt and CorrosionKeep Your Electrical Connections Safe – Seal, Lubricate and Insulate to Prevent Various Leaks or Damage Around Any Electrical Connection Ensuring Top Performance and Vehicle QualityHigh Performance Dielectric Tune-Up Grease Helps Extend the Life of Bulb Sockets, Ignition Coil Connectors, and Electric Connections Within Your BatteryRequired For Modern, High Energy Ignition – Permatex Dielectric Tune-Up Grease Ensures Automotive Performance, Extended Lifetime and Corrosion Prevention Within Electrical SystemsSuggested Applications – Permatex Dielectric Tune-Up Grease is Appropriate For Spark Plug Boots, Trailer Hitches, Battery Terminals, and All Other Electrical Connections