SF – 40 is a multipurpose anti-rust lubricant with many functions like: Anti-rust, dehumidification, lubrication, cleaning & conductivity. It can efficiently maintain all kinds of mechanical equipment, precision instruments, and components, so that metal product can maintain a good working condition for a long time and prolong their service life. It has an excellent rust proof effects on metals, has a strong affinity with the metal su affinity with the metal surface, and has a strong permeability, which can effectively eliminate moisture and rust on metal surface and inside. It is non-sticky and can effectively lubricate metal parts. It can efficiently remove grease, dirt, stains, labels and other adhesive on surface of many objects.