40mm Gas Mask Filters – Israeli Civil Defense NBC, 3-Pack
This 3-pack includes three factory-sealed Israeli Civil Defense 40mm gas mask filters for compatible respirators and powered-air systems. It suits families, multi-mask households, or buyers who want more than one sealed replacement on hand.
The filters use the standardized EN 148-1 / RD40 threaded interface. These filters are compatible with all masks and hoods sold on CBRNmasks.com. Before use, check each filter’s packaging and condition, and confirm that it is suitable for the intended hazard.
Israeli Civil Defense NBC Filter 3-Pack - Key Features and Specifications
3x Genuine Israeli Civil Defense Filters - Authentic NOS, not replicas or aftermarket copies
Brand New, Factory Sealed - Never used, stored airtight, no prior exposure
Easy-Breathing Design - Lower inhalation resistance than older heavy metal canisters for more comfortable extended wear
Lightweight Polymer Canister - Better balance on the mask, easier to carry in a preparedness kit
Standard 40mm NATO Thread (EN 148-1 / Rd40 / STANAG 4155) - Compatible with all 40mm NATO-threaded gas masks, PAPR hoods, and blowers
40mm NATO Compatibility: Compatible Gas Masks and PAPR Hoods
Compatible with all gas masks and PAPR hoods using a standard 40mm threaded port marked EN 148-1, RD40, or STANAG 4155 - including every mask and PAPR system sold on CBRNmasks.com. Not compatible with bayonet-style or proprietary quick-connect respirators without an adapter. Always verify the type of your mask connection before ordering.
Who Is This NBC Filter 3-Pack For?
Families of three needing one filter per person
Emergency preparedness and family evacuation kits
Civil defense and shelter-in-place readiness
Primary filter plus two sealed spares for any 40mm NATO gas mask or PAPR system
Wildfire smoke, industrial hazards, and poor air quality events
The Most Popular Add-On to Any CBRN Gas Mask or PAPR Hood Kit
A gas mask or PAPR hood is only as good as the filter inside it. The 3-pack is the add-on most customers choose when completing their CBRN kit, giving them one active filter and two factory-sealed backups, stored and ready. Browse our Israeli CBRN Full-Face Gas Masks andCBRN PAPR Hood Systems collections to complete your setup.
Israeli Civil Defense NBC Filters - Single, 2-Pack and 4-Pack Options
This bundle includes three factory-sealed 40mm threaded filters.
Will these filters fit every respirator?
No. They fit compatible respirators with a true EN 148-1 / Rd40 40mm threaded port. Bayonet, proprietary, and other connectors may require a manufacturer-approved adapter or may not be compatible.
How should sealed filters be stored?
Keep them unopened in their original packaging in a cool, dry place away from sunlight, chemicals, and physical damage. Follow the marked expiration and storage instructions.
How long does a filter last?
It depends on the contaminant level, concentration, humidity, airflow, and other conditions. For more information, Read our guide by clicking below
Replace it when required by its instructions, after relevant exposure, when damaged or expired, or when safe service life cannot be established. Do not rely on smell or taste as a warning.
What should I inspect when the package arrives?
Check every canister and sealed package for dents, corrosion, punctures, broken seals, or other damage. Keep the shipping packaging and contact us before use if anything is unexpected.
Do you offer free shipping?
Yes. We offer free worldwide standard shipping. This product ships from Israel.
We normally process orders within 1–3 business days, Sunday through Thursday, and standard international delivery typically takes 5–21 business days.
For U.S. orders, CBRN Masks prepays applicable import tariffs.
See our Shipping Policy for full shipping and delivery details.
The secure payment methods currently available for your location are shown at checkout. These may include major credit or debit cards and supported accelerated-payment options.
What is the return and refund policy?
Eligible items may be returned within 30 days of delivery. If your order arrives in multiple shipments, the 30-day period starts when the last item arrives.
Great kit.
I bought it and 3 extra black rigid filters.
I had a question, and David helped me immediately
The shipping took about 9 days to reach San Francisco.
I tried it on my 7-year-old, and it works well.
Everything I expected was in the box. I checked the threads, connection and straps, then did a short fit test at home. Everything was fine.
Josh H
Awesome product
Great kit.
I bought it and 3 extra black rigid filters.
I had a question, and David helped me immediately
The shipping took about 9 days to reach San Francisco.
I tried it on my 7-year-old, and it works well.
Child Gas Mask – Quartz CBRN PAPR Hood, Ages 2–8
Beat Zurbriggen
Everything I expected was in the box. I checked the threads, connection and straps, then did a short fit test at home. Everything was fine.
Israeli Civil Defense Gas Mask – 4A1 Black Diamond + NBC Filter
Brandon Kowalski
The fit became much better once I loosened everything and tightened the straps from the bottom up. After that, the seal felt even around my face.
Israeli Civil Defense Gas Mask – 4A1 Black Diamond + NBC Filter
