MIL-PRF-131 Class 1 is a military-grade barrier packaging specification used to protect products from moisture, vapor transmission and environmental damage. Creopack provides MIL-PRF-131 Class 1 barrier packaging for military, aerospace, export, defense and industrial applications.
Our solutions can include:
Creopack converts MIL-PRF-131L Class 1 barrier materials into custom packaging formats adapted to your product size, handling requirements and protection level.
Thanks to its inner polyethylene layer, this material can be heat sealed using a handheld heat sealer. For best results, a straight-bar sealer applying heat from both sides is recommended. This versatility allows for the creation of custom vapor barrier bags, including formats designed to meet MIL-DTL-117 requirements.
MIL-PRF-131L Class 1 is a high-performance, water-vapor-proof aluminum foil laminate used in protective packaging applications where moisture, vapor and environmental protection are critical.
As a military-grade material, it must meet strict requirements set by the U.S. Department of Defense for use across defense agencies and demanding industrial applications. These standards support consistent performance, product protection and material traceability.
At Creopack, we offer multiple QPD-listed materials approved by the U.S. Naval Labs Qualified Products Database for MIL-PRF-131L Class 1 applications.
As of April 2022, the specification transitioned from MIL-PRF-131K Class 1 to MIL-PRF-131L Class 1. The update maintained the same performance requirements while streamlining the standard by removing Class 2 materials.
MIL-PRF-131 Class 1 barrier packaging is designed to reduce the risk of moisture damage, vapor transmission, corrosion, oxidation and contamination during storage, handling and transportation.
This type of barrier protection is especially valuable when products are exposed to long shipping cycles, overseas transport, harsh environments or long-term storage conditions. When combined with desiccants, VCI corrosion-prevention solutions or custom liners, MIL-PRF-131 Class 1 packaging can help create a complete protective packaging system.
MIL-PRF-131L Class 1 materials are designed for demanding protective packaging applications.
Key performance benefits include:
These materials are commonly used for products requiring long-term protection during shipment, storage or field deployment.
To earn a place in the U.S. Naval Labs QPD, MIL-PRF-131L materials undergo extensive testing. Every batch must match the tested sample exactly—any unapproved modification risks rejection and removal from the QPD.
Mandatory Testing Conditions:
At Creopack, we supply QPD-listed MIL-PRF-131L Class 1 materials and help ensure that your packaging solution is selected and converted according to your protection requirements.
MIL-PRF-131 Class 1 barrier packaging is used in industries where product protection, compliance and long-term reliability are essential.
Common applications include:
Creopack combines technical packaging expertise, access to QPD-listed materials and custom conversion capabilities to support demanding military, export and industrial packaging projects.
Key advantages include:
MIL-PRF-131 Class 1 barrier packaging is often part of a broader protective packaging strategy. Depending on the product, storage conditions and shipping environment, Creopack can also help with related solutions such as moisture barrier bags, 3D barrier bags, desiccants, VCI corrosion-prevention packaging, container liners, drum liners and carton liners.
We understand that you need fast service. That’s why we make sure to answer all requests right away.
To ensure quick turnaround times, we maintain an extensive inventory of desiccants, bags, roll stock, packaging machinery and more.
As a distributor, we can prep orders that fit your exact requirements. No order is too big or small!
We only work with reliable, industry-leading manufacturers, such as Accu-Seal, Clariant, Desiccare, PAC Machinery, PackRite, Zerust, and more.
For Canadian customers, our location allows us to offer minimal shipping prices and to avoid unexpected duties & brokerage fees.
Ideal for clients with limited space and recurring needs! We order large quantities, then send you small shipments of products as you need them. The remainder is stored at our Toronto or Montreal warehouse, ready to be shipped as your stock runs out.
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