What is Cosmoline?

Cosmoline is a thick, oily substance that is used as a rust inhibitor and protectant. It is commonly used on firearms, ammunition, and other metal objects that are stored for long periods of time. It's made from a mixture of mineral oils, waxes, and other chemicals, and is thick and sticky when applied. It forms a prot
Cosmoline is a thick, oily substance that is used as a rust inhibitor and protectant. It is commonly used on firearms, ammunition, and other metal

Cleaning the cosmoline from this surplus Chinese SKS gave me PTSD. Info in comments. : r/guns

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