Fast-Drying Rust Preventive Oil
KG-4A / KG-4B Fast-Drying Rust Preventive Oil for Powder Metallurgy
Low-viscosity, high-penetration oil that seals micro-pores and displaces water in sintered parts.

- Typical coverage
- 35 m²/L
- Humidity test (40 °C)
- 1,000 h
- Salt spray test
- 72 h (steel)
- Flash point
- 62 °C
Product overview
KG-4A and KG-4B are made for powder metallurgy parts. Their low viscosity and strong penetration let the oil work into micro-pores and displace water, giving long-lasting protection.
Key benefits
- Low viscosity and high penetration
- Enters micro-pores and displaces water
- 1,000 h humidity test and 72 h salt spray (steel)
- No minimum immersion time
Typical applications
- Sintered (powder metallurgy) parts
Metals
Powder metallurgy (sintered) steel
Application method
DipSprayBrush
How to use
- Dip, spray or brush; no minimum immersion time.
- Do not apply with a rag.
Related products
Related grades

Fast-Drying Rust Preventive Oil
KG-2C / KG-3C
Fast-Drying Rust Preventive Oil for Plated & Phosphated Surfaces
- Seals plated, black oxide and phosphated surfaces
- Light oil feel
1,000 h humidity96 h salt spray
Learn More 
Water-Displacing Rust Preventive Oil
KG-10
Water-Displacing Fast-Drying Rust Preventive Oil
- Strong water displacement
- 1–2 years of protection on steel
500 h humidity24 h salt spray
Learn More 
Fast-Drying Rust Preventive Oil
KG-2B / KG-3B
Fast-Drying Rust Preventive Oil for Cast Iron
- Formulated for cast iron, with strong penetration
- 1–2 years when bagged
500 h humidity24 h salt spray
Learn More
Not sure this is the right grade?
Tell us the metal, the process and the protection period you need. A corrosion protection specialist will recommend a grade and arrange samples.