Gas Mask Filter Problems Solved.

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Frontier Firearms

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With the high demand for gas masks over the past 3 years, available availability of good quality filters (and ones that actually fit) has been a challenge. The two most common filter sizes are 40mm & 60mm.

Generally the 40mm thread is the most common size on gas masks (Canadian, Russian & Czech & British), however the filters for the 40mm masks, are rare, and can be very expensive. This summer we were able to get our hands on a good supply of Finnish 60mm Filters, so we started to dream up ways to make them comparable.

Gun sales were crazy and we had to shelve the idea until we had more time. Now with more time on our hands we been able to put together a 3D printed solution for those who have 40mm gas masks but cannot find a supply of filters.

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Simple 60mm Threaded female End to a 40mm Male End

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All there is to it!



Here is a few options that we are now offering.








If you currently have a 40mm Gas Mas, we are also offering a 5 Pack of Finish Filters with 1 Adaptor for $89.95.




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Also compatible with Czech and Canadian Military 40mm Gas masks.
 
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What, specifically, do these filter? NBCW? Or something you might use for painting? Also, just how good a seal do you get with a 3d printed fix. Filter is pointless if air gets in around it.
 
Hmm will this pass muster for sealing? Does it have a o-ring or is the thread tapered like pipe thread?

I don't mean to be rude but this might just be decorative, even more than using old possibly non-sealing gas masks (but are still marked more than strictly decorative).
 
All of the potential problems as mentioned above are a bit worrisome, but furthermore, 40mm GOST and 40mm NATO are two different thread pitches. I have a hard time believing it actually forms an airtight seal on both types of masks. Also 60mm filters contain all sorts of nasty stuff ranging from asbestos to chromium. Just pony up the extra money folks and get a good mask and good filters. Frontier has some great offerings
 
Alright so what kind of testing have you done? Have you actually tested for proper seal using banana essence (CIA method) or anything similar? Considering the nature of the product, I hope you've actually tested them to the best of your ability. Furthermore, where's the spec sheet? What is it rated for? What's it's construction even? There's not much info out there. HEPA filter and charcoal or just charcoal?
 
ROBPECKFORD said:
Are Theese for preppers? Or military training? Just wondering...
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I'd def say for training unless much more info is provided. Wouldn't rely on no-name surp filters for serious scenarios. They're not in a sealed mylar bag or anything so it'd be hard to say how good the charcoal still is. Good for a workout as it limits airflow but like that other guy said, if it has asbestos and chromium, only thing it's worth for is LARPing. MIRA Safety is having a clearance event on their previous model CBR"N" filters and with some cart trickery you can get them for a descent price. Tho a big common misconception, considering the current global sociopolitical events, if I understood what i read correctly, is that most CBR"N" filters don't deal with the radioactive iodine itself but merely the particulates that carry it. So you gotta combine most CBRN filters with some thyrosafe unless specifically spec-ed to handle radioactive iodine.
 
Direct quote from a surp expert at kruschiki.com (@krus_chiki on Twitter) "I think it’s kinda dumb imo the masks are ineffective at that age for any serious use. They were produced from 1961-1971, and used to the 90s, so any filters will be well over 30 years old. Not sure about the content. *if* they seal properly *maybe* it would help against tear gas"
 
Alright so what kind of testing have you done? Have you actually tested for proper seal using banana essence (CIA method) or anything similar? Considering the nature of the product, I hope you've actually tested them to the best of your ability. Furthermore, where's the spec sheet? What is it rated for? What's it's construction even? There's not much info out there. HEPA filter and charcoal or just charcoal?
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If you would like a modern, brand new gas mask, ready NBC warfare , spend the $400-$500 and you will have what you need.

We are not advertising these as that and we are charging as if they are either.
 
Frontier Firearms said:
If you would like a modern, brand new gas mask, ready NBC warfare , spend the $400-$500 and you will have what you need.

We are not advertising these as that and we are charging as if they are either.
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I mean, by titling your post as "Gas Mask Filter Problems Solved." forgive me if I thought otherwise... Perhaps a disclaimer on your product page should be added like many other surplus website put such as "FOR COSTUME PURPOSES ONLY", "THESE FILTERS ARE 30+ YEARS OLD", "USE AT YOUR OWN RISK", etc. If you're assuming that your customers "already know that"; that's legally laughable.

I'm sure what would be truly appreciated by many tho is giving us a cross-section of one of the filters.

Side note, allegedly, according to a mutual who owns some, they are indeed charcoal based and do not contain asbestos or chromium so outta be safe to use :) No clue if they have a HEPA filter.
 
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and a proper fitting

koopa1333 said:
All of the potential problems as mentioned above are a bit worrisome, but furthermore, 40mm GOST and 40mm NATO are two different thread pitches. I have a hard time believing it actually forms an airtight seal on both types of masks. Also 60mm filters contain all sorts of nasty stuff ranging from asbestos to chromium. Just pony up the extra money folks and get a good mask and good filters. Frontier has some great offerings
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AND, do a proper FIT test, or ANY mask is useless...
 
josey wales said:
The use of Banana essence is called qualitative fit testing; most modern facilities use quantitative fit testing like a PortaCount unit for respirators; never heard it referred to as "CIA method"

We still use the qualitative test for M95s, it is a PIA.

Lately the use of PAPRs has become popular since there is no fit testing required with these, just a bit of training.
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My amateur ass calls it CIA method because I learned it from a declassified CIA instructional video from the 70s(?) :D Thanks for the clarification
 
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