Olive Drab (OD) Gas Mask Winterization Kit - New

U.S. Military Olive Drab (OD) Gas Mask Winterization Kit – New

Ensure your life-support equipment remains fully operational in extreme cold with the authentic G.I. Gas Mask Winterization Kit. Specifically engineered for the M40 and M42 series protective masks, this kit is a critical mission-essential component for operations in Arctic or sub-zero environments. Standard mask components can become rigid or prone to fogging in freezing temperatures; this kit provides the specialized upgrades necessary to maintain a perfect seal and clear vision when the thermometer drops.

Each kit contains specialized rubber components and lens protectors designed to withstand thermal shock and prevent moisture crystallization. The Olive Drab (OD Green) storage pouch ensures all components stay organized and protected when not in use. Featuring an easy-to-install design, this NSN 4240-01-330-3431 kit is a must-have for CBRN collectors, preppers in cold climates, and survivalists who demand year-round readiness.

Technical Specifications & Features

• NSN: 4240-01-330-3431
• Condition: New / Unissued (Factory Fresh).
• Color: Olive Drab (OD Green) Components and Pouch.
• Compatibility: Designed specifically for the M40 and M42 series Chemical-Biological protective masks.
• Kit Contents:
• Winterized Inhalation Valves: Specialized rubber valves that remain flexible in extreme cold to ensure easy breathing.
• Outhalation Valve Cover: Protects the primary valve from freezing shut due to condensation from exhaled breath.
• Anti-Fog Lens Outserts: Specialized dual-pane or treated lens covers that provide an insulating air gap to prevent frosting and fogging.
• OD Nylon Carrying Pouch: A rugged, compact pouch with a secure closure for organized storage within a mask carrier.
• Design Features:
• Extreme Cold Protection: Engineered to maintain mask functionality in temperatures well below freezing.
• Tool-Free Installation: Most components are designed to be snapped or stretched into place for rapid field deployment.
• CBRN Rated: All components meet strict military standards for chemical and biological resistance.
• Authenticity: Genuine U.S. Military Issue / Manufactured by authorized government contractors.

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