Zerust/Excor Sales and Ordering FAQs

What is the shelf life of Zerust/Excor VCI film products?

Most Zerust/Excor VCI film products have a shelf life of up to three years when the product is stored in original airtight packaging, out of direct sunlight and under shelter. Other products such VCI Kraft paper, VCI emitters, liquids and rust removers may have a shorter shelf life. Please refer to each product technical datasheet for the correct shelf life.

How long does Zerust/Excor VCI corrosion protection remain effective?

Zerust-Excor provides effective corrosion protection for clean metals for years when used correctly and utilized within three (3) years from receipt. Zerust-Excor product should be stored in original packaging away from direct sunlight in conditions below 85 deg. F (30 deg. C) and 50% RH until it is ready for use.

How much Zerust/Excor VCI must be placed in the packaging?

The component part or volume needing protection must be completely enclosed by a Zerust/Excor active material. If complete Zerust/Excor packaging is being used no additional VCI material is required. However, this also depends on the nature of the packed merchandise. If there are difficult to access areas, it is advisable to use Zerust/Excor VCI protection.

Can Zerust/Excor VCI bags be reused?

Zerust/Excor VCI film and bags can be reused if they are dry, clean, and undamaged. Small holes in the VCI film material can be sealed with adhesive tape. VCI bags that have large holes or tears, or have begun to crack or lose strength due to excessive exposure to direct sunlight will not provide adequate corrosion protection and should not be reused.

How do you correctly seal Zerust/Excor VCI?

The more tightly sealed the VCI packaging the better the volatile corrosion protection. Seal closed with zip-ties, packaging tape or staples. A good closure is to fold over the film and either tape or staple the area shut. When stapling seal over the holes made by the staples with tape. The best seal is always a heat seal, but it is not necessary. Also, it is not necessary to extract air from the enclosure before sealing, just prevent future airflow. Water must be prevented from penetrating the packaging. Be careful to fold over film and close VCI gusset bags so that water cannot easily pool and enter the enclosure.

What type of packaging tape should you use with VCI Film and VCI bags?

Use a high-quality packaging tape that is designed to adhere to low energy surfaces like polyethylene or, you can fold over and staple the area shut and then seal over the holes made by the staples with the recommended tape. If you have a large rip that you cannot close easily with tape or staples, you should replace the bag with a new one. The best seal is always a heat seal.

What happens after VCI packaging has been removed?

After removal of Zerust/Excor packaging, the VCI substances present on the metal surface disperse within one to two hours.

Is VCI film better than VCI film? What are the differences between them?

Both VCI packaging products are useful, but may better depending on the application. VCI paper releases VCIs more rapidly than VCI film, but does not have as long of a service life. VCI film acts as a barrier to water vapor, whereas dry paper readily absorbs moisture. Other characteristics of the product needed could include formability, visibility of parts, and outer packaging used. The application should be oriented toward the goods to be protected and the details of the manufacturer’s packaging operations. A Zerust/Excor representative can advise you on this.

Can I use my Zerust/Excor VCI bags together with oil coatings?

A light oil coating on the metal part is fine to use with Zerust/Excor VCI bag. A heavy oil coating may affect the performance of the VCI bag by keeping the corrosion inhibiting vapor molecules from reaching the metal surface. Please contact Zerust/Excor to determine the suitability of the oil and application.

How do I know which of your products to use for my type of metal?

Ferrous: Iron, steel and cast iron metals are protected using Zerust/Excor Ferrous Packaging.
Non-Ferrous: Aluminum (and aluminum alloys containing copper and/or manganese), copper, brass, bronze and fully galvanized steel are protected using Zerust/Excor Non-Ferrous Packaging.
Multimetal: Products that contain combinations of the Ferrous and Non-Ferrous metals listed above can be protected Zerust/Excor Multimetal Packaging.
Silver: Is protected from tarnishing with Zerust/Excor anti-tarnish packaging or film with acid-gas scavenger additives.

What color are Zerust VCI Film Products? Do you offer blue VCI bags?

Zerust/Excor trademark color is yellow. We also offer stock items in blue, green, clear and gray. We can custom produce most products in any color of your choice.

How can I tell whether my products require VCI protection?

If you have any questions regarding the best VCI protection for your needs, we advise consulting Zerust/Excor representative. Zerust/Excor possesses wide-ranging testing capabilities which quickly enable us to determine the optimum method of protecting a given metal item. We also can send samples for customers to conduct their own tests. Try packing identical parts at the same time and under identical conditions, one part in normal film or your current packaging and one in Zerust/Excor film. Next store these parts for several days in the most challenging conditions they will be in such as high-humidity or move them from warm to cool places in your warehouse similar to shipping conditions. If the part packed in normal packaging shows signs of corrosion, while the one packed in Zerust/Excor VCI film shows none, it can be assumed that the part requires VCI protection.

My product has been produced, but I have to wait for “Quality Control Testing”. What is this?

Each order is tested by Zerust’s Quality Control Department to ensure that it meets our quality standards for corrosion protection and material performance. Part of the quoted lead time is used for this quality testing. If you’d like to waive this quality testing on your product, you must sign a Quality Testing Waiver Request form. Please contact your service representative for more information.

Does the management of your VCI products meet an ISO Standard?

Yes, Northern Technologies International Corporation the maker of Zerust/Excor products operates a quality management system for the design and manufacture of corrosion inhibiting and protective packaging systems that is certified to conform to the ISO 9001:2015 Quality Management Standard.

Can Zerust/Excor VCI plastic films be recycled?

Yes. Zerust VCI films made of polyethylene and polypropylene can be recycled at facilities for PE/PP processing or incinerated.

Are Zerust/Excor VCI packaging products made of recycled materials?

Zerust/Excor VCI products are produced using only virgin materials to assure a high level of quality and consistency for our customers.

How can I purchase Zerust VCI products?

To purchase Zerust VCI products, you can either call 1-800-328-2433 or 1-763-225-6600 to speak with a customer service representative, or send an email to sales@zerust.com.

How do I know that I am measuring length, width, and height correctly?

For flat bag, sheet, sleeve, and round bottom bags.

Width is measured from edge to edge. If it is a slit seal bag, measure inside seal to inside seal or inside seal to fold.
Bag length is measured from top of bag to top of bottom seal or fold.
Sleeve or sheet length is measured from cut edge to cut edge.

 

You may also try our bag calculator to help find the right sized back for you.

What are NTIC’s lead times for Zerust VCI stock products?

NTIC’s stock products ship from centrally located warehouses in the United States. In stock products ship within 1-2 days. Some stock liquid and powders require 5-7 days for repacking certain sizes. Your customer service representative can advise you of your products handling time and estimated shipping time.

What are NTIC’s lead times for Zerust VCI custom products?

NTIC’s custom product lead times vary depending on the product and quantity. Typical lead times for custom products are 3-4 weeks. Some specialty product features or additives can take 8-10 weeks. For specific product inquiries, please contact our customer service team.

Zerust/Excor Technical FAQs

What is the shelf life of Zerust/Excor VCI film products?

Most Zerust/Excor VCI film products have a shelf life of up to three years when the product is stored in original airtight packaging, out of direct sunlight and under shelter. Other products such VCI Kraft paper, VCI emitters, liquids and rust removers may have a shorter shelf life. Please refer to each product technical datasheet for the correct shelf life.

How long does Zerust/Excor VCI corrosion protection remain effective?

Zerust-Excor provides effective corrosion protection for clean metals for years when used correctly and utilized within three (3) years from receipt. Zerust-Excor product should be stored in original packaging away from direct sunlight in conditions below 85 deg. F (30 deg. C) and 50% RH until it is ready for use.

How much Zerust/Excor VCI must be placed in the packaging?

The component part or volume needing protection must be completely enclosed by a Zerust/Excor active material. If complete Zerust/Excor packaging is being used no additional VCI material is required. However, this also depends on the nature of the packed merchandise. If there are difficult to access areas, it is advisable to use Zerust/Excor VCI protection.

Can Zerust/Excor VCI bags be reused?

Zerust/Excor VCI film and bags can be reused if they are dry, clean, and undamaged. Small holes in the VCI film material can be sealed with adhesive tape. VCI bags that have large holes or tears, or have begun to crack or lose strength due to excessive exposure to direct sunlight will not provide adequate corrosion protection and should not be reused.

How do you correctly seal Zerust/Excor VCI?

The more tightly sealed the VCI packaging the better the volatile corrosion protection. Seal closed with zip-ties, packaging tape or staples. A good closure is to fold over the film and either tape or staple the area shut. When stapling seal over the holes made by the staples with tape. The best seal is always a heat seal, but it is not necessary. Also, it is not necessary to extract air from the enclosure before sealing, just prevent future airflow. Water must be prevented from penetrating the packaging. Be careful to fold over film and close VCI gusset bags so that water cannot easily pool and enter the enclosure.

What type of packaging tape should you use with VCI Film and VCI bags?

Use a high-quality packaging tape that is designed to adhere to low energy surfaces like polyethylene or, you can fold over and staple the area shut and then seal over the holes made by the staples with the recommended tape. If you have a large rip that you cannot close easily with tape or staples, you should replace the bag with a new one. The best seal is always a heat seal.

What happens after VCI packaging has been removed?

After removal of Zerust/Excor packaging, the VCI substances present on the metal surface disperse within one to two hours.

Is VCI film better than VCI film? What are the differences between them?

Both VCI packaging products are useful, but may better depending on the application. VCI paper releases VCIs more rapidly than VCI film, but does not have as long of a service life. VCI film acts as a barrier to water vapor, whereas dry paper readily absorbs moisture. Other characteristics of the product needed could include formability, visibility of parts, and outer packaging used. The application should be oriented toward the goods to be protected and the details of the manufacturer’s packaging operations. A Zerust/Excor representative can advise you on this.

Can I use my Zerust/Excor VCI bags together with oil coatings?

A light oil coating on the metal part is fine to use with Zerust/Excor VCI bag. A heavy oil coating may affect the performance of the VCI bag by keeping the corrosion inhibiting vapor molecules from reaching the metal surface. Please contact Zerust/Excor to determine the suitability of the oil and application.

How do I know which of your products to use for my type of metal?

Ferrous: Iron, steel and cast iron metals are protected using Zerust/Excor Ferrous Packaging.
Non-Ferrous: Aluminum (and aluminum alloys containing copper and/or manganese), copper, brass, bronze and fully galvanized steel are protected using Zerust/Excor Non-Ferrous Packaging.
Multimetal: Products that contain combinations of the Ferrous and Non-Ferrous metals listed above can be protected Zerust/Excor Multimetal Packaging.
Silver: Is protected from tarnishing with Zerust/Excor anti-tarnish packaging or film with acid-gas scavenger additives.

What color are Zerust VCI Film Products? Do you offer blue VCI bags?

Zerust/Excor trademark color is yellow. We also offer stock items in blue, green, clear and gray. We can custom produce most products in any color of your choice.

How can I tell whether my products require VCI protection?

If you have any questions regarding the best VCI protection for your needs, we advise consulting Zerust/Excor representative. Zerust/Excor possesses wide-ranging testing capabilities which quickly enable us to determine the optimum method of protecting a given metal item. We also can send samples for customers to conduct their own tests. Try packing identical parts at the same time and under identical conditions, one part in normal film or your current packaging and one in Zerust/Excor film. Next store these parts for several days in the most challenging conditions they will be in such as high-humidity or move them from warm to cool places in your warehouse similar to shipping conditions. If the part packed in normal packaging shows signs of corrosion, while the one packed in Zerust/Excor VCI film shows none, it can be assumed that the part requires VCI protection.

My product has been produced, but I have to wait for “Quality Control Testing”. What is this?

Each order is tested by Zerust’s Quality Control Department to ensure that it meets our quality standards for corrosion protection and material performance. Part of the quoted lead time is used for this quality testing. If you’d like to waive this quality testing on your product, you must sign a Quality Testing Waiver Request form. Please contact your service representative for more information.

Does the management of your VCI products meet an ISO Standard?

Yes, Northern Technologies International Corporation the maker of Zerust/Excor products operates a quality management system for the design and manufacture of corrosion inhibiting and protective packaging systems that is certified to conform to the ISO 9001:2015 Quality Management Standard.

Can Zerust/Excor VCI plastic films be recycled?

Yes. Zerust VCI films made of polyethylene and polypropylene can be recycled at facilities for PE/PP processing or incinerated.

Are Zerust/Excor VCI packaging products made of recycled materials?

Zerust/Excor VCI products are produced using only virgin materials to assure a high level of quality and consistency for our customers.

How can I purchase Zerust VCI products?

To purchase Zerust VCI products, you can either call 1-800-328-2433 or 1-763-225-6600 to speak with a customer service representative, or send an email to sales@zerust.com.

How do I know that I am measuring length, width, and height correctly?

For flat bag, sheet, sleeve, and round bottom bags.

Width is measured from edge to edge. If it is a slit seal bag, measure inside seal to inside seal or inside seal to fold.
Bag length is measured from top of bag to top of bottom seal or fold.
Sleeve or sheet length is measured from cut edge to cut edge.

 

You may also try our bag calculator to help find the right sized back for you.

What are NTIC’s lead times for Zerust VCI stock products?

NTIC’s stock products ship from centrally located warehouses in the United States. In stock products ship within 1-2 days. Some stock liquid and powders require 5-7 days for repacking certain sizes. Your customer service representative can advise you of your products handling time and estimated shipping time.

What are NTIC’s lead times for Zerust VCI custom products?

NTIC’s custom product lead times vary depending on the product and quantity. Typical lead times for custom products are 3-4 weeks. Some specialty product features or additives can take 8-10 weeks. For specific product inquiries, please contact our customer service team.

If you have any questions about our products and services that are not answered above, please contact our technical team for more information.

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