MSA GMT Respirator Cartridge — Multi-Gas (MSA Comfo)
$78.93
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EDITORIAL REVIEW: 4.4/5WC Safety Review — MSA GMT Respirator Cartridge Best For: multi-gas exposure with little or no dust on MSA Comfo respirators. Not For: dust, mist or gases outside its approved list. It is a ...
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EDITORIAL REVIEW: 4.4/5WC Safety Review — MSA GMT Respirator Cartridge
Best For: multi-gas exposure with little or no dust on MSA Comfo respirators.
Not For: dust, mist or gases outside its approved list. It is a gas cartridge only.
Bottom Line: the gas-only multi-gas choice for the MSA Comfo system. Add dust protection with the GME/P100 when particulate is present.
Editorial assessment by Steven Eaton, WC Safety editor. Scoring reflects published MSA specifications, NIOSH approval, application fit and category expertise. WC Safety did not laboratory-test this product.
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Read our MSA GMT review for the detailed review.
MSA GMT Respirator Cartridge Overview
The MSA GMT is a NIOSH-approved multi-gas cartridge for the MSA Comfo system. It adsorbs organic vapor, acid gas and other listed gases, and tritium oxide (tritiated water vapor) and carries a olive (multi-gas) band. As a Comfo cartridge it fits MSA Comfo Classic, Comfo II, Ultra-Twin and Ultra-Elite respirators. Start with our guide to choosing a respirator cartridge, confirm the band on the respirator cartridge color chart, and see MSA Comfo vs Advantage if you are unsure which system you own.
The MSA GMT belongs to the MSA respirator filters and cartridges range. It is a gas cartridge only — for dust, step up to the GME/P100 combination cartridge, which builds a P100 filter in.
Where the MSA GMT Fits in Cartridge Selection
Confirm the hazard before the cartridge. The MSA GMT handles multi-gas gas — not particulate. If you also face dust or mist, our organic vapor vs P100 guide and filter types explained cover when to move to a combination cartridge.
Who Should Buy the MSA GMT?
Buy it if your exposure is multi-gas with no significant dust, on an MSA Comfo facepiece. Choose another cartridge if your hazard differs: for multi-gas plus dust use the GME/P100, and for a broader gas mix see the MSA Comfo GME multi-gas cartridge.
What Does the MSA GMT Protect Against?
| Hazard | Fit | Buyer guidance |
|---|---|---|
| Multi-Gas (organic vapor, acid gas and other listed gases, and tritium oxide (tritiated water vapor)) | Yes | The sorbent bed. |
| Dust, mist, fume (particulate) | No | Add a prefilter or use the GME/P100 (P100) version. |
| Gases Outside Its Approved List | No | Use the matching MSA cartridge for that hazard. |
What the MSA GMT Does NOT Protect Against
The MSA GMT does not capture particulate or gases outside its approved list. For dust, step up to the GME/P100 combination cartridge, which builds a P100 filter in; for a different gas, match the MSA cartridge to the hazard.
No air-purifying cartridge makes a dangerous atmosphere safe. Never use the MSA GMT in an oxygen-deficient or IDLH (immediately dangerous to life or health) atmosphere, in unknown concentrations, or against gases with no warning properties — those conditions require a supplied-air or SCBA system, not a cartridge respirator. A cartridge or filter carries no assigned protection factor of its own — the APF comes from the facepiece it is fitted to: 10 for a half mask, 50 for a full facepiece (OSHA 1910.134 Table 1), which is the number that decides the highest exposure the respirator may legally be worn in. That facepiece must be fit tested before first use and at least annually, and a fit test is specific to one make, model, and size — passing on one mask does not carry over to another. Perform a user seal check every time the respirator is donned, and note that facial hair crossing the sealing surface disqualifies a tight-fitting respirator no matter how well it fit at the last test.
Best Applications
Tritium service
Its distinguishing use is tritium oxide (tritiated water vapor) in nuclear and research settings, alongside multi-gas duty.
General multi-gas
Mixed industrial gases where one cartridge must cover a range.
Pros & Cons
Pros
NIOSH-approved multi-gas protection · genuine MSA Comfo fit · olive (multi-gas) band for quick ID · lighter and cheaper than a combination cartridge
NIOSH-approved multi-gas protection · genuine MSA Comfo fit · olive (multi-gas) band for quick ID · lighter and cheaper than a combination cartridge
Cons
gas only — no particulate protection · Comfo connection only (not cross-compatible) · one gas class
gas only — no particulate protection · Comfo connection only (not cross-compatible) · one gas class
MSA GMT vs Other MSA Cartridges
| Cartridge | Protects against |
|---|---|
| MSA GME | Multi-gas |
| MSA GMI/P100 | Radioiodine + P100 |
| MSA MerSorb/P100 | Mercury + P100 |
| MSA GME/P100 | Multi-gas + P100 |
MSA GMT vs the Alternatives
How it compares to the closest MSA options:
- GMT vs GME: both are multi-gas; the GMT is additionally rated for tritium oxide service.
- GMT vs GMI/P100: the GMI is the radioiodine specialist; the GMT handles tritium oxide and general gases.
- GMT vs GME/P100: add the GME/P100 when you also need built-in P100 particulate.
MSA GMT Quick Answers
Does the MSA GMT filter dust?
No — it is gas-only; for particulate use the GME/P100 or add a prefilter.
Does the MSA GMT fit my MSA respirator?
It fits the MSA Comfo family. Check your facepiece against the MSA half-mask and full-face ranges.
Is the MSA GMT reusable?
The cartridge is used until its service life is reached; the respirator is reusable across many cartridge changes.
MSA GMT Specifications
| Gas class | Multi-Gas |
| Particulate | None (gas cartridge) |
| NIOSH band | Olive (multi-gas) band |
| Connection | MSA Comfo |
| Sold as | Each |
Compatible MSA Respirators
The MSA GMT uses the MSA Comfo threaded-bayonet connection, so it mounts on the Comfo Classic half-mask and Ultra-Elite full-face respirators (and the Comfo II and Ultra-Twin). It is not interchangeable with the MSA Advantage series, and does not fit 3M, Honeywell North or other brands.
| Respirator | Type | Compatible? |
|---|---|---|
| MSA Comfo Classic | Half mask | Yes — Comfo bayonet |
| MSA Comfo II | Half mask | Yes — Comfo bayonet |
| MSA Ultra-Elite | Full face | Yes — Comfo bayonet |
| MSA Ultra-Twin | Full face | Yes — Comfo bayonet |
| MSA Advantage series | Half / full | No — different connection |
| 3M / Honeywell North | Half / full | No (not compatible) |
Helpful Buying Guides
- MSA Comfo vs Advantage
- How to choose a respirator cartridge
- MSA vs 3M respirator cartridges
- MSA vs Honeywell North cartridges
- organic vapor vs P100
- respirator cartridge color chart
- respirator filter types explained
MSA GMT Frequently Asked Questions
What does the MSA GMT protect against?
The MSA GMT is a multi-gas cartridge. It adsorbs organic vapor, acid gas and other listed gases, and tritium oxide (tritiated water vapor). It is gas-only and does not filter particulate; it does not protect against gases outside its approved list.
Does the MSA GMT filter dust?
No. It is a gas cartridge. For dust or mist, step up to the GME/P100 combination cartridge, which builds a P100 filter in.
Which respirators does the MSA GMT fit?
It uses the MSA Comfo threaded-bayonet connection and fits the Comfo Classic, Comfo II, Ultra-Twin and Ultra-Elite. It does not fit the Advantage series.
What color band is the MSA GMT?
The MSA GMT carries a olive (multi-gas) band; confirm it on the cartridge color chart before use.
Is the MSA GMT NIOSH-approved?
Yes. The MSA GMT is NIOSH-approved under 42 CFR Part 84 for multi-gas. Verify any cartridge against the NIOSH Certified Equipment List.
How is the MSA GMT sold?
This listing is the Each. Case pricing comes from an industrial distributor; we do not quote.
How often should I replace the MSA GMT?
Replace the cartridge on a documented change-out schedule based on objective data, or when an end-of-service-life indicator shows it is spent, and whenever it is damaged. Under 29 CFR 1910.134(d)(3)(iii)(B) the change schedule must rest on objective data or an end-of-service-life indicator — odour, taste or irritation may not be the primary basis. If you can smell or taste anything through the cartridge, breakthrough has already happened: leave the area immediately and change it..
Can I add a P100 filter to the MSA GMT?
Yes — the easiest route is the GME/P100, which builds a P100 particulate filter into the same gas cartridge.
Is the MSA GMT the same as the Advantage version?
No. The chemistry is equivalent, but the connection differs — Comfo and Advantage cartridges are not interchangeable. Match the cartridge to your facepiece.
Is this the genuine MSA GMT cartridge?
Yes. Buy authentic, NIOSH-approved MSA GMT cartridges through legitimate channels only.
What is the difference between the MSA GMT and a multi-gas cartridge?
A single-class cartridge is tuned to its listed gases; a multi-gas cartridge covers a broader mix at the cost of a shorter service life against any one gas.
How should I store the MSA GMT?
Store it sealed in its original packaging, away from gases and dust, so the sorbent is not used up before you wear it.
Written by Steven Eaton, WC Safety Editorial — industrial respiratory protection desk. Reviewed by Steven Eaton, WC Safety editor. Specifications sourced from MSA Safety published data and verified against the NIOSH Certified Equipment List. Compare the range in MSA respirator filters & cartridges or read MSA Comfo vs Advantage.
WC Safety is an independent PPE review site and Amazon Associate; no paid placement. Always verify cartridge compatibility and follow your written respiratory protection program. General information, not medical or regulatory advice.
Read our detailed MSA GMT Respirator Cartridge review — strengths, limitations, and the alternatives that matter.
Brand / Vendor
MSA Safety
Model / SKU
806059
Product Type
Respirator Cartridge
Price
$78.93 (Amazon)
Availability
Check current availability on Amazon
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Coverage focuses on equipment built for professional use in manufacturing, construction, and industrial environments.
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Product information is compiled from manufacturer specifications, published standards information, compatibility data, and other cited sources.
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