A-A-50493C, COMMERCIAL ITEM DESCRIPTION: OIL, PENETRATING (FOR LOOSENING FROZEN METALLIC PARTS (22 JUL 2011)

A-A-50493C, COMMERCIAL ITEM DESCRIPTION: OIL, PENETRATING (FOR LOOSENING FROZEN METALLIC PARTS (22 JUL 2011)., This commercial item description (CID) covers two types of penetrating oil for freeing of corroded and frozen metallic parts resisting movement, without causing damage to such parts. The penetrating oil is applied to metal surfaces to break down rust and corrosion, reduce friction, and retard corrosion.