Delta Adsorbents carries the highest grade Class 1 Vapor Barrier with Plastic OPP outer, general purpose medium strength. Barrier Material is water, vapor, and grease proof and QPL MIL-PRF-131K.

Specification establishes the requirements for heat-seal and grease proof flexible barrier materials having low WVTR/OTR properties for use in military packaging.

Vapor Barrier Structure Description: OPP/PE/Foil/PE Physical Properties