Use In Spark Plug Installation On Aluminum Cylinder Head-Equipped Engines. Permatex Anti-Seize Lubricant: Prevents Corrosion, Permits Easy Disassembly, Will Not Wash Away, Eliminates Galling & Seizing, Lubricates, Withstands Up To 1600�f (870�c). Withstands High Temps & Prevents Corrosion. Prevents Seizing & Galling. Insures Removal Of Spark Plugs.