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NBC‑77 SOF 40 mm CBRN gas mask filter front view
The NBC‑77 SOF 40 mm CBRN Filter is a premium, high-performance cartridge designed for reliable protection against chemical, biological, radiological, and nuclear threats. Built for professional and civilian preparedness, it is fully compatible with all standard 40 mm NATO-threaded gas masks and powered air-purifying respirators (PAPRs).
 
This advanced filter provides comprehensive defense against a wide range of threats, including organic vapors, acid gases, ammonia, mercury vapors, radioactive iodine, and particulates. It is constructed with a shock-resistant hard plastic shell to withstand tough environments and impacts.
 
Weighing only 335 g, the filter remains lightweight and easy to carry while maintaining peak performance. With a 20-year factory-sealed shelf life, it is ideal for long-term storage and emergency readiness. Tested to achieve ≥ 99.99% particle filtration efficiency at 95 L/min, it delivers exceptional performance even under demanding conditions.
 
The NBC‑77 SOF ensures trusted protection for military, law enforcement, first responders, and emergency preparedness professionals.

MIRA Safety NBC‑77 SOF 40 mm CBRN Cartridge Filter – Universal Protection

$79.99Price
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    • Thread Standard: NATO Rd 40 × 1/7″ (STANAG 4155 / EN 148‑1)
    • Protection Class: A2B2E2K2HgSXP3 D R reactor rated (covers radioactive iodine and blister agents)
    • Certifications: EN 14387:2004 + A1:2008, CE marked
    • Dimensions: Diameter ~110 mm; Height ~85 mm
    • Weight: ~335 g ±5%
    • Breathing Resistance: ≤ 140 Pa at 30 L/min; ≤ 600 Pa at 95 L/min
    • Filtration Efficiency: ≥ 99.99% at 95 L/min airflow
    • Shell Material: Shock‑resistant hard plastic
    • Shelf Life: 20 years (sealed)
    • Operating Temperature: –30 °C to +50 °C (humidity ≤ 95%)
    • Storage Conditions: –5 °C to +30 °C, humidity under 80% recommended
    • Country of Manufacture: Czech Republic
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