VpCI®-329 is an oil-based vapor corrosion inhibiting concentrate for use with lubricating, hydraulic, and preservation oils, and provides excellent protection in sheltered outdoor/indoor conditions. VpCI®-329 protects in two unique ways by offering a tenacious film, which clings to metal surfaces as well as vapor phase inhibitors into the air above the oil. The vapors condense and form a protective barrier on metal surfaces that are not in contact with the oil. This combination allows complete protection to internal system parts.



• Contains no hazardous chromates, nitrites, or phosphate inhibitors
• High flash and fire points
• Protects ferrous metals, zinc, galvanized steel, aluminum, copper, and brass.
• Compatible with most oils
• Can be fogged into metal compartments
• Parts can be dipped and stored
• VpCI®-329 provides good salt spray resistance
• NATO #6850-66-132-6100 / NSN #6850-01-470-3359
• VpCI®-329 is commercial equivalent to MIL-PRF-46002C (Grade 1)



Short-term protection: One part VpCI®-329 to 19 parts oil.

Medium-term protection: One part VpCI®-329 to 9 parts oil.

Long-term protection: One part VpCI®-329 to 4 parts oil.

Storing metal parts: Spray, dip, or brush VpCI®-329 onto metal parts before storage.

Storage for lubricating, hydraulic, and metal cutting systems: Add Cortec® VpCI®-329 to oil in engines before storage. For best results, add VpCI®-329 to the oil, then cycle or run the engine for 10 minutes before shutdown.




Oil Characteristics Typical Values
Appearance Opaque Tan Color
Specific Gravity 0.91

Viscosity (ASTM D92)

40 °C 51,4 cSt
100 °C 8,1 cSt
Index 129
Pour Point (ASTM D6749) -37 °C (-35 °F)
Flash Point (ASTM D92) 164 °C (326 °F)
Fire Point (ASTM D92) 164 °C (328 °F)
Total Acid Number (ASTM D974) mg KOH/g 26.9


Oil Separability (ASTM D1401)
@ 82°C (180°F)

Oil, ml 0
Water, ml 0
Emulsion, ml 80
Time, dk 60

Foaming Characteristics
(ASTM D892)

Seq. I 365/290/600+
Seq. II 435/350/600+
Seq. III 340/260/600+

Properties listed above are typical of those obtained through normal production and do not constitute a specification. VpCI®-329 is generally soluble in hydrocarbon based fluids, however compatibility and solubility should be verified prior to use.Please contact DEYAP Technical Service for more information


ASTM D-1748     /     Humidity Cabinet    /     600+ Hours
ASTM B117        /     Salt Spray               /     100 Hours



VpCI®-329 is packaged in 5 gallon (19 liter) plastic pails, 55 gallon (208 liter) metal drums, totes, and bulk. The product should be sealed before storage. Agitate before each use. The shelf life of VpCI®-329 is up to 24 months