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NBC-77 SOF® 40mm NATO Filter For Gas Masks – CBRN Filter, 20 Year Shelf Life
- Standard 40mm NATO thread
- Factory-sealed long-term storage
- Particulate and gas filtration
- Standard 40mm NATO thread
- Factory-sealed long-term storage
- Particulate and gas filtration
NBC-77 SOF® 40mm NATO Filter For Gas Masks – CBRN Filter, 20 Year Shelf Life - Black / 1-Pack is backordered and will ship as soon as it is back in stock.
- 40mm connectionMatch compatible filters
- 335g ±5%Weight
- Secure checkoutEncrypted payments
NBC-77 SOF® 40mm NATO Filter For Gas Masks – CBRN Filter, 20 Year Shelf Life
Black / 1-PackInside this product
What’s included

NBC-77 SOF® 40mm NATO Filter For Gas Masks – CBRN Filter, 20 Year Shelf Life
A 40mm NATO-threaded filter cartridge for compatible respirators, with a factory-sealed storage life of up to 20 years.
Product photo
Product overview
Match MIRA's NBC-77 SOF to a compatible Rd40 respirator, selecting the pack quantity and reviewing its documented classification and sealed-storage conditions.
Specifications
| Connection | Rd 40 × 1/7″; EN 148-1 |
|---|---|
| Manufacturer classification | A2B2E2K2HgSXP3 D R REACTOR |
| Storage life | Up to 20 years factory sealed; check label date |
| Height | 85mm |
| Diameter | 110mm |
| Weight | 335g ±5% |
Use & care
Keep the filter factory sealed until needed and check its marked storage date. Store it under the manufacturer’s conditions. Service life depends on the contaminant, concentration and use conditions.
Do not wash the filter, blow it clean with compressed air or attempt to regenerate it. Follow the respirator and filter instructions for selection, change-out and disposal.
Frequently asked questions
Find clear answers about this product, from choosing it to putting it to use.
















