MIL-PRF-131 Class 1 Foil Barrier Material

MIL-PRF-131 Class 1 barrier material is a Qualified Products List (QPL) approved foil laminate engineered for maximum protection against moisture, oxygen, grease, and contaminants. Built for mission-critical preservation, this high-performance material ensures long-term integrity of sensitive components and equipment during storage and shipment. Constructed with a multi-layer structure of OPP (Oriented Polypropylene) / Polyethylene / Aluminum Foil / Polyethylene, this material delivers exceptional barrier strength and heat-seal reliability while maintaining flexibility for easy fabrication into bags, pouches, and wraps. Typical Properties: Specification: MIL-PRF-131L, Class 1 Structure: OPP / PE / Foil / PE Caliper: 4.5 mil (ASTM D2103) Yield: 6,050 in²/lb (Calculated) Puncture Resistance: 20 lbs (MIL-STD-3010) Tensile Strength: 28 lbs/in (ASTM D882) Breaking Strength: 75 lbs (MIL-PRF-131L) Oxygen Transmission Rate (OTR): 0.0005 cc/100 in²/day (@ 0% RH, 23 °C) Water Vapor Tra