Dry film lubricant is a new type of lubricant prepared by uniformly dispersing ultra-low molecular weight polytetrafluoroethylene particles (PTFE) and perfluoropolyether oil (PFPE) in a fluorine solvent.After the fluorine solvent of this drying film oil evaporates,it will forms a uniform translucent lubricant film on the surface of the workpiece.The oil film is a mixture of polytetrafluoroethylene and perfluoropolyether, which has a very low friction coefficient, does not absorb dust, and has excellent lubricating performance and cleaning performance.The oil film prevents direct contact of the friction surfaces, thereby reducing friction.Its lubricity is more than 2 times that of most common lubricants, its operating temperature range is wide, and it has the characteristics of high cleanliness, low torque lubrication, noise reduction, anti-static, and oil-free