What is cosmolene?

Cosmolene is a petroleum-based product that is used as a rust inhibitor, lubricant, and protective coating. It is a thick, high-viscosity grease that is commonly used to protect metal parts from corrosion during long-term storage and transportation. Cosmolene is typically applied to metal surfaces by brushing, spraying, or dipping, and it forms a thick, protective layer that can resist moisture, dirt, and other contaminants. Cosmolene has been used in the military and aviation industries for decades, and it is also used in the automotive and industrial sectors. While it is an effective protectant, cosmolene can be difficult to remove and should be handled with care.