L-640 Penetrating Oil is a superior quality penetrating lubricant which has many uses such as lubricating locks, hinges, moving parts, stopping rust and corrosion and especially freeing “frozen” rusty bolts and nuts. L-640 Penetrating Oil saves production, maintenance and repair time. It is ideally suited for heavy-duty applications such as heavy equipment, automobiles, workshops, boats, tractors, etc.
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