This product is a thin-film anti-rust oil in reddish-brown oily liquid form. Formulated with multiple rust preventive additives, it delivers excellent rust resistance. Model F20-1 thin-film anti-rust oil provides outstanding anti-corrosion performance for ferrous and non-ferrous metal workpieces, with a general rust prevention lifespan of 2 to 3 years. Easy to apply without dilution by extra solvents, and it features moderate lubricity. Thanks to its medium viscosity, most components can be directly assembled without prior cleaning. It forms a thin, transparent and aesthetic oil film with low consumption. Suitable for long-term sealed oil anti-rust treatment of various metal parts and assemblies, including steel, brass, red copper, aluminum, galvanized and cadmium-plated materials. It can also be diluted for inter-process rust protection.