View How Zerust® ICT® Vapor Capsules Work

The Problem

Offshore oil platforms, refineries, and other such facilities typically operate in a humid, aggressive corrosion environment. Corrosion of automation systems, electrical control boxes, retail fuel pump meters, connectors, contacts, relays, switches and printed circuit boards, causes unscheduled maintenance and reliability issues at these facilities. Few enclosures containing electrical equipment can be economically protected by air conditioning or a fully hermetic vacuum seal. Even explosion-proof housings aspirate ambient air through the long thread channel of the cast housings and by diffusion through seals and gaskets. Traditional protection methods such as painting, greases, electrical heaters inside control boxes to prevent condensation, etc. are not effective.

Problems caused by electrical equipment corrosion include resistivity changes and intermittent contact failures in critical alarm and control functions, added local heating and power loss in critical components, solderability issues for circuit boards, changing the calibration of analog meters and, ultimately the integrity of cabinets are compromised.

The Solution

Zerust® ICT® Vapor Capsules are portable capsules that contain patented Zerust® VCI technology. Use to protect metals in hard to reach areas of control panels, electrical cabinets and other enclosed spaces, even when they are in operation. Or use as a supplement to other Zerust® VCI packaging products for added protection.

For over 50 years, Northern Technologies International Corporation (NTIC) has used proprietary Vapor Corrosion Inhibitors (VCIs) to protect metal substrates across numerous industries. The specific solution recommended for electronics and electrical control boxes is NTIC’s line of Zerust® ICT® Vapor Capsules. These capsules are available in various sizes to suit multiple applications.

Zerust® ICT® Vapor Capsules are easily installed in a matter of seconds without tools or specialized labor. Simply peel the cover tape from the adhesive backing and affix to most surfaces. The capsules protect metals for 1 to 2 years, depending on the product model.


  • Safe* and effective corrosion protection where traditional anti-corrosion methods can not be used.
  • Easy to install, economical to use.
  • Does not affect the circuit boards or sensitive components.
  • Suitable for new equipment and to protect the reliability of existing equipment.

*Safe for people. This product does not pose a health hazard to users due to its classification as an article according to UN GHS, US OSHA HazCom and CA WHMIS regulations. Check REACH SDS for classification in EU.

Sizes and Specifications

Zerust® ICT® Vapor Capsules

Zerust® ICT® Vapor Capsules


Protected by Zerust® ICT® Vapor Capsules


No Protection


Contact us to learn how Zerust can help you manage your corrosion problems.