The Napier Super VP90 Corrosion Inhibitor for Gun Safes and Cases (Model: NVP90 / VP90) is a passive chemical vapour-phase inhibitor (VCI) designed to protect firearms from atmospheric corrosion. It releases an invisible, monomolecular vapour that actively bonds to ferrous and non-ferrous metal surfaces within an enclosed space. Because it does not extract ambient moisture like silica desiccants or electric heating rods, it will not dry out, split, or shrink wooden stocks. The sachet operates without 240V mains power or batteries, making it compliant for safe storage across Australia without electrical certification.

Key Features

• Vapour-Phase Protection: Emits a monomolecular barrier that adheres to all exposed metal surfaces to block atmospheric moisture and rust.
• Self-Healing Film: The molecular layer automatically self-repairs if firearms are handled or temporarily exposed to air inside the storage unit.
• Stock and Material Safe: Contains no VOCs or nitrates; safely interacts with wood, plastics, leather, glass, and all ferrous or non-ferrous metals without leaving residue.
• Passive Operation: Requires no electrical wiring, charging, or power source, operating continuously in standard enclosed cabinets and transport cases.

Specifications

• Model Number: NVP90 / VP90
• Form Factor: Passive vapour-emitting sachet
• Effective Volume Coverage: Exactly 1 cubic metre (approx. 35.5 cubic feet) per sachet
• Effective Lifespan: Up to 1 year (12+ months) in sealed or closed enclosures
• Product Dimensions: Approx. 120 mm × 152 mm × 6.4 mm (4.75 in × 6 in × 0.25 in)
• Weight: Approx. 23 g (0.05 lbs)
• Power Requirements: None (passive emission)
• Material Compatibility: All ferrous and non-ferrous metals, wood, glass, leather, plastics

Who is the Napier Super VP90 Corrosion Inhibitor for?

• Hunters storing wooden-stocked rifles in humid coastal regions — Prevents rust across enclosed metal components without stripping moisture from wooden stocks, offering continuous protection for up to 1 year (12+ months) without requiring electrical power.
• Shooters storing firearms in enclosed gun safes or hard cases — Delivers vapour-phase corrosion inhibition covering exactly 1 cubic metre (approx. 35.5 cubic feet) of volume per 23 g sachet, preventing surface corrosion inside sealed security cabinets and transit cases.

Less suitable for: Storage enclosures with a total volume exceeding 1 cubic metre without using multiple sachets proportionally (which requires high-capacity dehumidification systems), or open-air, ventilated gun racks where passive vapour cannot saturate the air (which require direct liquid rust inhibitors such as gun oils or corrosion-inhibiting greases).