Zerust VCI Diffusers

Zerust® Vapor Capsules
and VCI Diffusers Series

Zerust Global Corrosion 1
Management Solutions

How Zerust® Works for You.

For over 35 years, beginning with the invention of
VCI-infused plastic packaging products, Zerust®/
Excor® has led the market in quality corrosion
solution products. We are dedicated to providing
expert corrosion management services and
broadening the range of corrosion solutions for
our customers. Zerust users have access to onsite
support from Zerust/Excor representatives in more
than 70 countries. Our customers have peace of
mind when they choose Zerust for corrosion control
management.

Zerust VCI Diffuser Series

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VCI Diffuser Series. Diffusers provide targeted vapor corrosion protection in hard-to-reach
enclosed spaces or can be used as added protection to Zerust packaging products. Diffusers
emit powerful Zerust Volatile Corrosion Inhibitor (VCI) molecules into an enclosure that settle
on metal surfaces and protect them from corrosion.

Our Commitment to Quality, Safety and the Environment

We are committed to making safe and effective products that reduce industry’s impact on
the environment. Zerust/Excor products are approved by many major companies’ toxicology,
engineering and packaging departments and comply with health and safety regulations
around the globe including the following:

• REACH Regulation Compliant (EC No 1907/2006)
• European RoHS Directive Compliant
• Do not contain SVHC (Substances of Very High

Concern)
• Labelled in accordance with GHS (Globally

Harmonized System) and are compliant under UN
GHS, EU CLP, US OSHA HazCom and CA WHMIS

Zerust is a business unit of Northern Technologies International Corporation (NASDAQ:NTIC),
1 Headquartered in Minnesota, USA. The management system of Zerust products is ISO

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Zerust®/Excor® VCI Diffuser Guide

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protective vapor from the space faster than it is released from the diffuser. Protection
ratings for each product assume a relatively empty enclosure to enable direct diffusion
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VCI diffusion pathways, it is good practice to double the number of diffusers.

Instructions for Installing Diffusers

1. To activate, simply take the diffuser out of its packaging.
2. Note the installation date. Vapor Capsule products include a space to mark the date.
3. Place the diffuser in the enclosure following the principles below.
4. Make sure the diffuser has maximum surface space exposed for ideal diffusion.

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protected for up to two years depending on the product used.

Center Position Side Position Corner Position

The ideal location is the Good for most applications, In large enclosures, two
center of the enclosure. and provides the optimum capsules may be placed on
protection. diagonally opposed corners to
fully protect the entire space.

What is VCI?

VCI is an abbreviation for Vapor Corrosion Inhibitor or Volatile Corrosion Inhibitor. VCIs are
molecules that inhibit corrosion by forming a thin, protective layer on a metal surface within
an enclosed space. This invisible layer prevents moisture and environmental elements from
reacting with the metal surface and causing corrosion. The molecules dissipate when the
enclosure is opened and do not need to be removed.

“In effect, the ZERUST® VCI
corrosion protection applies

and removes itself.”

Without protection Zerust®/Excor® VCI 2

Zerust® Vapor Capsule Diffusers

Zerust Vapor Capsule diffusers are easy-to-use capsules that contain Zerust corrosion
inhibiting technology. Vapor Capsules emit powerful corrosion inhibiting molecules that settle
on metal surfaces and protect them from corrosion. All are safe for electronics, odorless,
residue-free, and are designed to work in restricted spaces.

Use Vapor Capsules to provide multimetal corrosion protection in almost any enclosure or as
a supplement to other Zerust packaging products for added protection. Use Vapor Capsules
to protect electrical components in enclosures, since they do not interfere with the electrical
conductivity or resistance of the contact surfaces.

VC1-1(S) VC1-1 VC2-1 VC2-2 VC6-1 VC6-2

Coverage Specifications - Multimetal Protection

Product Name and NSN Volume of Radius of Duration of Adhesive
Part Number National Stock Number Protection Protection Protection Backing

VC1-1 (S) 6850-01-426-3539 4 ft3 1 ft 1 year Yes
375-M-00006 (0.1 m3) (0.3 m) 1 year Yes
6850-01-338-1393
VC1-1 4 ft3 1 ft 1 year Yes
375-M-00001 Prior: 4440-01-481-3150* (0.1 m3) (0.3 m)
2 years Yes
VC2-1 6850-01-475-9949 35 ft3 2 ft 1 year No
375-M-00002 (1 m3) (0.6 m) 2 years No
Prior: 6850-01-345-7431*
VC2-2 Prior: 4440-01-475-9949* 35 ft3 2 ft
375-M-00003 (1 m3) (0.6 m)
6850-01-133-0373 900 ft3
VC6-1 (25 m3) 6 ft
375-M-00004 6850-01-590-1676 900 ft3 (2 m)
(25 m3) 6 ft
VC6-2 6850-01-348-1090 (2 m)
375-M-00005
Prior: 6850-01-348-1390*
*Obsolete NSN

Military Users Products with or without
adhesive may need to be
For additional information on CID A-A-59441, secured with a cable tie.
NSN and proven military applications, visit Particularly when vibration,
www.zerust.com/military or email [email protected]. cold or surface contaminants
may cause the adhesive to be
Our domestically sold diffuser ineffective over time.
products are proudly manufactured
in the USA.

3

Zerust® Activ™ Series

Zerust® Activ™ series products combine a fast-acting volatile Flash Corrosion Inhibitor (FCI™) Zerust ActivPak®
with a Vapor Corrosion Inhibitor (VCI) to protect ferrous and aluminum metals in enclosed
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long-term corrosion protection with its progressive VCI chemistry. Use Activ series products to
protect equipment and assets in corrosive and contaminated environments.

The Activ series technology is available in different product offerings optimized to protect in Zerust ActivPak® offers
a range of applications and void sizes. Do not place in direct contact with copper, brass or zinc advanced corrosion
and test before use in the same void space. protection in a convenient
and secure packet format.
Coverage Specifications - Multimetal Compatible*

Normal Environment** Aggressive Environment**

Zerust® Volume of Duration of Volume of Duration of
Product Name Protection Protection Protection Protection

(Up To) (Up To) (Up To) (Up To)

ActivTab™(LS)-25 0.25 ft3 (0.0071 m3) 6 months 0.025 ft3 (0.0007 m3) 15 days Acid Gas Test Results

ActivCapsule™ FAC1-1s 4 ft3 (0.12 m3) 1 year 0.35 ft3 (0.01 m3) 1 month Left to right; Competitor 1
ActivPak®(LS)-T330 5 ft3 (0.15 m3) 1 year 2 ft3 (0.05 m3) 2 months VCI, Zerust Activ protection,
ActivPak(LS)-33 16 ft3 (0.45 m3) 1 year 5 ft3 (0.15 m3) 2 months and Competitor 2 VCI.
ActivPak(LS)-T350 26 ft3 (0.75 m3) 1 year 7 ft3 (0.2 m3) 2 months
ActivPak(LS)-35 35 ft3 (1 m3) 1 year 11 ft3 (0.3 m3) 2 months
ActivPak-T330 5 ft3 (0.15 m3) 2 years 2 ft3 (0.05 m3) 4 months
ActivPak-33 16 ft3 (0.45 m3) 2 years 5 ft3 (0.15 m3) 4 months
ActivPak-T350 26 ft3 (0.75 m3) 2 years 7 ft3 (0.2 m3) 4 months
ActivPak-35 35 ft3 (1 m3) 2 years 11 ft3 (0.3 m3) 4 months
ActivPowder™(LS) 1 lb = 280 ft3 (8 m3) 3 years
ActivPowder 1 lb = 280 ft3 (8 m3) 3-15 years 1 lb = 90 ft3 (3 m3) 1 year
1 lb = 90 ft3 (3 m3) 1-5 years


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Zerust ActivTab(LS) Zerust ActivCapsule Zerust ActivPowder

Zerust ActivTab(LS) offers Zerust ActivCapsule provides Zerust ActivPowder protects Select the
advanced corrosion protection Activ(LS) technology in small large void spaces in Activ Series
in a tablet size for small areas. and hard to reach spaces. challenging environments. Product Right
for Your
Application.

4

Zerust®/Excor® VCI Diffuser Series

Excor UNICO Foam

EXCOR UNICO is a soft open-cell foam 5 mm thick which has been impregnated with VCI.
Thanks to its cellular structure it has a very large diffusing surface area which means that
the VCIs rapidly reach saturation point within the packaging.
UNICO foam can be used as a VCI booster in very voluminous film packages.
UNICO foam is available in rolls or sheets. It is odour-free, dry and resistant to ageing.

Excor UNICO Foam. Product Name Part Numbers Protection Volume of Duration of Product Specs
EXCOR® UNICO® 121226 Protection
Type Protection On a roll 1,000 mm x 60 rm
2 year Pre-cut pieces 230 x 270 mm
Type A 230 x 270 mm protects
approx. 200 ltrs

Length of Tube Strip for Zerust Tube Strip and Pipe Strip
ferrous protection.
Zerust Tube Strip and Pipe Strip products are designed to protect long narrow enclosures.
Tube Strip inserted Tube Strip is a flexible quarter-inch plastic tubing designed to protect tubes up to 2 inches in
in a handgun barrel. diameter such as gun and rifle barrels. Pipe-Strip consists of Vapor Capsules assembled on a
40 foot plastic strip and is designed to protect pipes up to 24 inches in diameter.
A section of Pipe Strip.
5 The products are easy to use and can be trimmed to accommodate many length tubes or
pipes. To use, insert product into the length of the enclosure and cap the ends. They emit VCI
molecules that saturates the air, protecting interior surfaces from corrosion.

Coverage Specifications - Ferrous Metal Protection

Product Name NSN Diameter Duration of Product Specs

and Part Number National Stock Number of Pipe Protection .25” diameter,
1000’ length,
Tube Strip 6850-01-590-1673 Up to 2 in 2 years
475-F-00001 (5 cm) 12 lb. roll

Coverage Specifications - Multimetal Protection

Product Name Diameter of Pipe Length of Duration of Product Specs
and Part Number Strip Protection
Up to 12 in 10 Capsules on
PS2-10 (30 cm) 40 ft 2 years 4 ft centers
525-M-00001 (12 m)
Up to 24 in 2 years 16 Capsules on
PS2-16 (60 cm) 40 ft 2.5 ft centers
525-M-00002 (12 m)

Illustration of a Pipe Strip
protecting a large pipe.

Zerust® Plastabs®

Zerust Plastabs are thin, light and rigid polyethylene squares. Their small shape makes Plastabs
perfect for protecting critical surfaces within narrow or hard-to-reach areas in enclosures.
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Plastabs can simply be dispersed throughout packages of metal parts.

Use Plastabs as a supplement to other Zerust packaging products, or use them alone
for protection in tightly restricted spaces. They are ideal for protecting electrical
components in small sections of enclosed cabinets or control boxes.

Coverage Specifications - Multimetal Protection

Product Name NSN Volume of Radius of Duration of Adhesive Qty Per
Protection Protection Backing Pack
and Part Number National Stock Number Protection 1000
0.3 ft 2 years No 1000
.5 x .5 inch - 0.1 ft3 (.09 m) 2 years No
425-M-00003 (.003 m3) 1000
0.4 ft 2 years Yes
.75 x .75 inch - 0.2 ft3 (0.1 m) 1000
425-M-00002 (.006 m3) 2 years No 10
0.4 ft 2 years No
.75 x .75 inch 6850-99-551-9054 0.2 ft3 (0.1 m) 2 years No 1000 1” x 3” Plastab in an
425-M-00004 (.006 m3) electronics enclosure.
0.5 ft
1 x 1 inch 6850-01-362-9256 0.4 ft3 (0.15 m)
425-M-00001 (.01 m3)
0.6 ft
1 x 3 inch - 1 ft3 (0.2 m)
425-M-00005 (.03 m3)
0.6 ft
1 x 3 inch 6850-01-590-1667 1 ft3 (0.2 m)
425-M-00006 (.03 m3)

Note: 1 x 3 inch Plastabs have printing. See photo on right.

Zerust Cor-Tab® Tablets

Zerust Cor-Tab tablets provide basic corrosion protection for metal items in small
and hard-to-reach enclosed areas. Simply place or sprinkle Cor-Tabs in the area you
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to protect metal items such as electronic instruments, computer parts, small metal
parts, and tools for up to six months in an enclosure or package.

Coverage Specifications - Multimetal Protection

Product Name NSN Volume of Radius of Duration of 6
and Part Number National Stock Number Protection Protection Protection

CT-25 6850-01-348-1092 0.25 ft3 0.40 ft 6 months
450-M-00001 (.007m3) (0.12 m)
6850-01-349-7073 0.50 ft3 0.50 ft 6 months
CT-50 (.015 m3) (0.15 m)
450-M-00002 - 0.60 ft 6 months
1 ft3 (0.2 m)
CT-10 (.03 m3)
450-M-00003

Zerust UK
Meadowfield Avenue
Green Lane Ind. Est.
Spennymoor
Co. Durham
DL16 6YJ

Tel: 01388 420333 Fax: 01388 420777
[email protected] www.zerust.co.uk

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Warranty: We guarantee our products conform to documented quality specifications. Product information subject to change without notice. We make no warranty of any kind expressed or implied as to the
effects of use (including, but not limited to, damage or injury). Before use, Buyer/User shall determine suitability of the product for its intended use, and Buyer/User assumes all risk and liability in connection there
with. All statements, technical information and recommendations contained herein are based on testing and experiences NTIC believes to be reliable, but the accuracy or completeness thereof is not guaranteed.
Buyer/User agrees that, if product proves to be defective, Seller’s obligation shall be to replace or refund the purchase price of such product at Buyer’s option. Seller shall not be liable in tort or contract for any
loss or damage, incidental or consequential.

Disclaimer: All statement, technical information and recommendations contained herein are based on testing and experiences NTIC believes to be reliable, but the accuracy or completeness thereof is not
guaranteed.

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