VpCI Pouch 308 & 309: Advanced Corrosion Protection Solution


The pouch contains a VpCI® powder for corrosion protection of ferrous metals in recessed areas, interior cavities, and voids. The pouches are constructed from breathable Tyvek®, which allows the VpCI® molecules to be emitted through the membrane and form a molecular layer on metal surfaces providing corrosion protection.

For information on the Powders without the use of the Pouch – Contact USI Direct at 248.735.7000

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The VpCI-308 Pouch is a highly effective solution for the corrosion protection of metals like iron, aluminum, copper, and bronze. Each pouch is crafted from permeable Tyvek® material, enabling the emission of VpCI molecules. These molecules then create a protective molecular layer on metal surfaces, ensuring robust corrosion defense.

Using VpCI-308 Pouches is remarkably simple and efficient. Without any complex chemical calculations or special equipment, you can easily determine the number of pouches needed for a given space. The VpCI-308 Pouch offers a straightforward and clean approach to preventing corrosion.

These pouches come in individual cuts, with each capable of safeguarding up to 1 cubic meter (35.3 cubic feet). Custom sizes and designs are also available to meet diverse needs.


  • Forms a protective layer on metal surfaces.
  • Delivers up to 24 months of consistent corrosion protection.
  • Free from nitrites, phosphates, and heavy metals.


  • The vapor-phase action of the VpCI-308 Pouch ensures protection of hard-to-reach and recessed areas.
  • Products remain ready for direct shipping to customers without the need to remove the VpCI layer post-arrival – simply remove the pouch.
  • The VpCI layer auto-replenishes in case of disturbance by moisture or air exposure, ensuring ongoing protection.
  • Minimal to no surface preparation needed.
  • Preserves the integrity of pre-coated and painted surfaces.
  • User-friendly and clean application.


  • Ideal for tubular structures, pipes, vessels, and internal components of compressors, turbines, engines, tanks, and boilers.
  • Suitable for steam condensate lines, closed heating and cooling circuits.
  • Essential for post-hydrostatic test equipment corrosion protection.
  • Perfect for safeguarding parts, components, and assembled items during transportation and storage.
  • Effective in protecting voids, cavities, tanks, and double-bottom storage tank floors.
  • An excellent choice for large control panels and electrical power supplies.

The VpCI-309 Pouch stands as a pivotal solution for the corrosion protection of ferrous metals, particularly in hard-to-reach areas like interior cavities and voids. Each pouch, crafted from Tyvek®, allows VpCI molecules to permeate through, forming a protective molecular layer on metal surfaces. This innovative technology ensures comprehensive corrosion protection.

Utilizing VpCI-309 Pouches is straightforward and hassle-free. There’s no need for calculating chemical concentrations or using special equipment; simply determine the required number of pouches for the designated space. The VpCI-309 Pouch offers a pristine and efficient means of preventing corrosion.

The effectiveness of the VpCI-309 Pouch in enclosed spaces is unmatched. Its vapor-phase inhibitors actively adsorb onto all metal surfaces, ensuring protection even in recessed sections and internal cavities.

Available as individually cut pouches, each VpCI-309 Pouch can protect up to 1 cubic meter, with options for custom sizes and designs.


  • Free from silicates, phosphates, nitrites, and heavy metals.
  • Up to 24 months of continuous protection.
  • Vapor-phase inhibiting action for comprehensive coverage of inaccessible and recessed surfaces.
  • Self-replenishing VpCI layer in case of moisture exposure or space opening.
  • Allows for direct shipping of protected products without the need to remove the VpCI film.
  • Prevents further corrosion on pre-coated and painted surfaces.
  • Simple, clean, and user-friendly.
  • Specifically designed for protection of ferrous metals.
  • LD50 ORAL rating of 2100mg/kg (rat).


  • Ideal for tubular structures, pipes, vessels, turbines, and the internal components of compressors, turbines, engines, tanks, boilers, and heat exchangers.
  • Perfect for the dry lay-up of closed circuit cooling systems.
  • Crucial for equipment protection following hydrostatic testing.
  • Essential for safeguarding parts, components, and complete assemblies during transportation and storage.


  • Carbon steel
  • Stainless steel
  • Aluminum

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