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Cortec VpCI® 326 top-tier corrosion inhibitor oil

Cortec VpCI® 326 top-tier corrosion inhibitor oil

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VpCI® 326 stands as a top-tier corrosion inhibitor oil additive specifically designed for hydraulic oil and gearbox assemblies.

It excels even in challenging conditions and amidst corrosive elements like sulfur compounds, chlorides, or hydrogen sulfide. Notably, VpCI® 326 excludes hazardous nitrites, phosphates, or chromates inhibitors from its formula.

Harnessing premium paraffinic petroleum distillates as carriers, VpCI® 326 boasts an exceptionally high flash point, elevating on-site safety compared to conventional oil protectants. Supplied in concentrated form, it offers ease of dilution with hydraulic, lubricating, or preservative oils, thereby reducing shipping and inventory expenses.

As a versatile corrosion inhibitor, VpCI® 326 isn't limited to ferrous metals; it's equally effective on zinc, copper, aluminium, brass, cadmium, galvanised steel, silver, and a myriad of other alloys.


  • Offers comprehensive corrosion protection for both ferrous and non-ferrous metals.
  • Free from nitrites and thermally stable, ensuring prolonged contact and vapour phase corrosion protection.
  • By incorporating VpCI® 326, many lubricants can enhance their anti-corrosion properties, ensuring uninterrupted corrosion protection during standby and shutdown phases.
  • NSN 6850 - 01 - 470-3358.
  • NATO 6850 - 66 - 132-6100.

Typical Application

Disperse VpCI® 326 concentrate within enclosed spaces at a rate of 1 liter/m3 (1 oz/ft3) for fogging interiors. Avoid using

VpCI® 326 in applications where liquid water exposure is possible. For further guidance on application inquiries, please reach out to Cortec®.

Packaging & Storage

VpCI® 326 packaging includes containers, pails, bulk, metal drums and liquid totes. Sizes are 32 oz./0.92L for containers, 5 gallons/19 liters for pails, 55 gallons/208 liters for liquid totes, bulk and metal drums.


Product Specifications (.PDF)


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