The NBC-3/SL is one of the most protective CBRN filters currently available on the civilian and professional market. Manufactured in Europe to the military filtration technology standards used by NATO forces worldwide, it is specifically designed to protect against weapons of mass destruction and CBRN-classified hazardous substances — chemical, biological, radiological, and nuclear.
Its optimized design ensures low breathing resistance while maintaining an exceptional level of protection. Compatible with all military and civilian protective masks equipped with the standard NATO Rd 40x1/7" thread (STANAG 4155), it fits directly on the CM-6 protective mask and the vast majority of gas masks available on the market.
Agents Covered
The NBC-3/SL filter protects against a very broad spectrum of harmful and highly toxic substances:
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Solid particles, aerosols, smoke, radioactive dust
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Biological agents: mold, bacteria, viruses
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Tear agents: OC, KN (chloroacetophenone), CR, CS
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Blister agents: sulfur mustard HD, nitrogen mustard HN1/HN2/HN3, lewisite L, HL
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Sternutatory agents: Clark I (DA), Clark II (DC), adamsite (DM)
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Choking agents: phosgene CG, diphosgene DP, chloropicrin PS
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Nerve agents — G series: sarin GB, cyclosarin GF, soman GD, tabun GA, GV
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Nerve agents — V series: VX, VR
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Cyanides: cyanogen chloride CK
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Incapacitating agent BZ
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Hazardous industrial pollutants
Shelf Life & Usage
NBC-3/SL filters are vacuum-sealed, guaranteeing a shelf life of ±20 years in intact packaging. Once opened, the shelf life is ±3 years. If increased breathing resistance or any change in air quality is noticed during use, the filter must be replaced immediately. Filters protecting against odorless gases must always be replaced after each use.
Compatibility
Compatible with all military and civilian protective masks fitted with the standard NATO Rd 40x1/7" thread — including the CM-6 protective mask available at Helvetia Defense. Also compatible with powered air-purifying respirators (PAPR) with the same thread standard.
Legal Framework — Export
In accordance with Swiss regulations, this product is subject to SECO export controls. It is intended exclusively for final use in Switzerland by the purchaser. Any resale, transfer, or assignment to another country requires prior authorization from the Swiss government.
