What is VCI oil-based corrosion protection?
Oil-based VCI combines the barrier of oil or wax with advanced VpCI® technology. It creates a powerful bearing protection that not only insulates the metal surface from moisture, but also disperses an anti-corrosion vapour into all nooks and crannies.
Oil-based VCI corrosion protection for outdoor storage and lubrication systems
VCI Oil-based combines the physical barrier of oil or wax with Cortec's advanced VpCI® (Volatile Corrosion Inhibitors) technology. The anti-corrosion vapour method is an effective solution for extreme challenges such as long-term outdoor storage, demanding marine transport or internal protection of gearboxes and hydraulic systems. Cortec VCI-Oil based corrosion protection is available as:
Want to learn more about the types of corrosion protection best suited to your business? Read more article on liquid rust inhibitors here and more about how dry rust inhibitors work here.
How does VCI Oil-based work?
VCI oil-based protectors use a unique two-step process for optimal protection:
- Evaporation: VCI molecules are continuously released and dispersed in the enclosed space until the atmosphere is saturated.
- Condensation: The molecules adhere to all metal surfaces and form a molecular protective film.
For which applications are VCI oil-based products used?
Oil-based VCIs are often chosen when more protection is required than plastic or paper can offer. Depending on your industry or sector, there are a number of specific benefits that will secure your operations:
Sector | Usage | Specific benefits |
| Mechanical engineering | Gearboxes and crankcases | Protects the interior during long-term storage and transport |
| Power & Energy | Turbines and pipework | Stable protection without the hassle of pre-start-up clean-up |
| Maritime transport | Tyre cargo and containers | Resists salt spray and extreme humidity for a long time |
| Vehicle & Chassis | Wires, links and chassis parts | Combines lubrication with extremely durable rust protection |
See examples of all uses here.
What are the advantages compared to traditional methods?
Switching to a VCI-based approach directly improves the efficiency of maintenance work and brings many benefits:
✔ Protects hidden cavities - Thanks to the vapour phase, even surfaces that the oil does not reach during application are protected.
✔ Easier commissioning - Many solutions are compatible with system oils and do not need to be washed off before starting the machine.
✔ Process friendly - For applications requiring welding or painting, the wax films can be easily removed with standard washing liquids.
✔ Environmentally smart options - We offer bio-based alternatives for businesses with high environmental standards.
✔ Quality assured technology - Nitrite-free solutions that fulfil ISO requirements, REACH and RoHS.
Frequently asked questions about VCI oil-based rust inhibitor
Does oil-based VCI need to be washed off before use?
In many cases not. Many of our products are designed to remain in the system during operation.
How long does protection last in outdoor storage?
It depends on the product choice. A heavy-duty wax protector can provide robust protection for up to 24 months outdoors.
Are there environmentally friendly alternatives?
Yes, we offer products based on vegetable oil. They are biodegradable and create a safer working environment.
How to choose the right rust inhibitor
Need help choosing the right VCI oil-based rust inhibitor? Explore our range of VCI Oil-based products or contact our experts for a technical review of your application. Click here to see our full range of VCI Oil-based and order today!
This article is fact-checked by Mats Gunnemyr, product manager corrosion protection at Tribotec.
