When protecting metal parts for shipment or storage, choosing the right packaging matters. Two commonly used options are VCI shrink wrap and VCI stretch wrap. While both contain Vapor Corrosion Inhibitor (VCI) technology, they serve different purposes.
If you’re unsure whether VCI shrink wrap or VCI stretch film is right for your application, this guide explains the differences, use cases, and best practices.
What Is VCI Shrink Wrap?
What Is VCI Stretch Wrap?
Explore ZERUST® ICT®510-SM Stretch VCI Film
Learn how ZERUST® VCI stretch wrap provides reliable corrosion protection and load stability for palletized shipments, bundling applications, and short- to medium-term storage.
VCI Shrink Wrap vs. VCI Stretch Wrap: Key Differences
| Feature | VCI Shrink Wrap | VCI Stretch Wrap |
|---|---|---|
| Application Method | Heat applied | Stretch tension |
| Seal Quality | Tight, sealed enclosure | Tension-wrapped, not fully sealed |
| Best For | Large equipment, exports, long-term storage | Pallet loads, bundling |
| Corrosion Protection | Higher in sealed environments | Moderate in ventilated environments |
| Equipment Required | Heat gun or shrink system | Manual or machine wrapper |
If your application involves overseas shipping, humidity exposure, or long-term layup, VCI shrink wrap typically offers stronger corrosion protection.
When Should You Use VCI Shrink Wrap?
Choose VCI shrink wrap when:
- Shipping equipment overseas
- Storing machinery outdoors
- Protecting valuable assets
- Preparing for long-term layup
- Environmental exposure is severe
Because shipping containers are not fully airtight, using properly sealed VCI shrink wrap significantly improves corrosion performance compared to loosely applied films.
When Is VCI Stretch Wrap the Better Option?
VCI stretch wrap works well when:
- Shipping palletized metal parts domestically
- Protection duration is shorter
- You need quick, high-volume packaging
- Environmental exposure is moderate
Stretch wrap is excellent for load containment, but it should not replace shrink wrap when a sealed corrosion-protective environment is required.
How VCI Technology Works in Both Films
Before selecting your packaging:
- Ensure parts are clean and dry
- Consider storage duration
- Evaluate climate exposure
- Assess shipping conditions
- Determine enclosure size
The correct thickness and VCI formulation depend on your application and metal type.
Need Help Selecting the Right Product?
Choosing between VCI shrink wrap and stretch wrap depends on your environment, metal type, and storage length.
The right combination of film thickness, enclosure design, and placement can be determined with the help of your ZERUST® Account Manager. Samples and testing are available to verify the correct packaging design to protect your metal parts.
Not Sure Which VCI Film Is Right for Your Application?
Whether you need protection for long-term equipment storage or palletized shipments, our corrosion experts can help you select the right solution. Contact ZERUST® to discuss your application, request samples, or schedule testing.
Vanessa Gilbert
Vanessa Gilbert was ZERUST®’s Marketing Manager for more than a decade, where she helped shape brand strategy and execute integrated campaigns across digital, events, and product marketing. She led numerous product launches, strengthened distributor and customer communications, and supported global growth initiatives for VCI packaging, rust preventatives, and corrosion management solutions. Although Vanessa has since moved on from the company, her contributions played a key role in elevating ZERUST®’s market presence and customer reach.
