Choose a rust preventive oil by matching four things: the metal (steel, cast iron, electrical steel, plated or sintered parts), the protection period you need, the environment (indoor, humid, marine, export shipping) and the application method (dip, spray or brush). Then confirm the choice with a short trial on real parts.
Step 1 — Metal
General steel: KG-2 / KG-3. Electrical steel laminations: KG-2A. Cast iron: KG-2B / KG-3B. Plated, black oxide or phosphated parts: KG-2C / KG-3C. Powder metallurgy: KG-4A / KG-4B. Magnesium alloys and multi-metal parts: KGY series.
Step 2 — Protection period
Months to about two years: fast-drying grades. Two to five years or sea shipping: KG-1, KG-8 or KG-9.
Step 3 — Environment
High humidity or wet parts: KG-10 (water-displacing), or KG-4A / KG-4B and KG-2C / KG-3C (1,000 h humidity test). Marine and salt-laden air: KG-8 or KG-9.
Step 4 — Application method
Dip: most grades. Spray or brush only: KG-8. Heated brush: KG-9. Dip, spray or brush: KGY series.
Always check
Downstream processes (painting, welding, plating), safety limits (flash point) and the cleaning method for removal.
Frequently asked questions
Do you provide samples?
Yes. Use the “Request Sample” button on any product page and tell us the metal and process.