SpecPack™ 1E1 - Foil Watervaporproof Barrier Bags
SpecPack™ 1E1 – High Barrier Foil Bags for Maximum Protection
Manufactured Exclusively by Royco Packaging
SpecPack™ 1E1 delivers the highest level of barrier protection available in a stocked, ready-to-ship format. Engineered for critical applications where moisture intrusion, oxygen permeation, and environmental degradation are unacceptable risks, SpecPack™ 1E1 provides verified MIL-PRF-131, Class 1 performance with complete certification documentation.
Available in 4"×4" and 6"×8" sizes for same-day shipment, SpecPack™ 1E1 is the solution when your components demand maximum barrier integrity—whether protecting sensitive components through extended storage, safeguarding aerospace hardware in harsh environments, or ensuring long-term preservation of mission-critical assets.
Premium Barrier Performance, Verified
SpecPack™ 1E1 barrier bags are manufactured and tested to MIL-DTL-117H, Type I, Class E, Style 1 pouch specifications using MIL-PRF-131, Class 1 certified material—the military's most stringent flexible barrier standard. This multi-layer foil laminate construction provides superior protection against water vapor transmission, oxygen infiltration, light exposure, and physical puncture.
Every order ships with full certification documentation including Manufacturer's Certificate of Compliance, ensuring your receiving inspection, quality audits, and contract compliance requirements are met without delay.
Specification Summary
- Pouch Specification: MIL-DTL-117H, Type I, Class E, Style 1
- Material Standard: MIL-PRF-131, Class 1
- Barrier Type: Multi-layer foil laminate construction
- Protection: Maximum WVTR (Water Vapor Transmission Rate) resistance
- Compliance: Berry Amendment compliant, Made in USA
- Quality System: ISO 9001:2015 registered facility
- Business Classification: Certified Small Business
- Documentation: Full Certificate of Compliance with every shipment
Why Defense and Aerospace Professionals Trust SpecPack™ 1E1
SpecPack™ 1E1 isn't generic foil packaging with ambiguous sourcing. It's not offshore material relabeled for the U.S. market. And it's not a distributor making unsubstantiated claims about barrier performance without verifiable test data.
SpecPack™ 1E1 products are manufactured and certified exclusively by Royco Packaging—a trusted domestic supplier with over 40 years of expertise in military-specification packaging for defense, aerospace, and regulated industrial markets.
The SpecPack™ Advantage:
✓ Tested to MIL-DTL-117H – Not just material compliance. Complete pouch testing to specifications with documented performance results.
✓ Certified Material – Not equivalent. Not comparable. Actual certified material with validated barrier properties and listed on the Governments Qualified Products List.
✓ Vertically Integrated Quality – Complete manufacturing control from material procurement through pouch fabrication and lot testing ensures consistent results.
✓ Domestic Production – Manufactured in the USA, Berry Amendment compliant, meeting your regulatory requirements and supporting domestic supply chain resilience.
✓ Application Expertise – Supported by packaging engineers with decades of experience in military preservation, long-term storage, and environmental protection requirements.
✓ Small Business Partner – Certified small business providing set-aside eligibility while delivering the technical capabilities and capacity of larger suppliers.
When your components face extended storage, hostile environments, or long supply chains—and failure isn't an option—SpecPack™ 1E1 provides maximum barrier protection with the certification your program demands. One bag. One choice. Zero compromises.
Custom Manufacturing Capabilities
Standard configurations serve many applications, but specialized programs often require tailored solutions. Royco Packaging offers custom pouch converting in MIL-PRF-131, Class 1 material for unique dimensions, specialized features, or production-scale requirements.
Require custom sizes, quantities, or technical specifications? Connect with our certified packaging specialists for expert consultation and quotations.

