The Devcon VersaChem Dielectric Connector Grease is a high performance 100% silicone dielectric compound that enables boots to be removed from spark plugs and distributor caps after long exposure to high energy ignition systems and hot engine temperatures. Use the dielectric connector grease on all electrical connections to prevent electrical power from migrating between circuitry. This OEM (Original Equipment Manufacturer) specified, waterproof and non-flammable connector grease is also corrosion-resistant, hi-temp sensor safe, resistant to alcohol and ketone, and resists arcing and voltage leakage.