Moldex 7367 Organic Vapor Acid Gas P100 Combo Cartridge Review

Is the Moldex 7367 the right combination cartridge for isocyanate and multi-hazard work?

Published June 10, 2026 · Last updated July 27, 2026

If your job involves spraying two-component coatings, working near acid mist and solvent vapors simultaneously, or applying pesticides with both organic vapor and particulate hazards, a standard organic vapor cartridge is not enough — and a stand-alone P100 filter is not enough either. You need a single assembly that covers gas, vapor, and oil-rated particulate at the same time. The Moldex 7367 is that assembly. Short answer: yes, for workers on the Moldex 7000, 7800, or 9000 platform who face simultaneous OV, acid gas, and particulate hazards, the 7367 is the right cartridge — with one important caveat around change scheduling and ESLI that you need to understand before you buy.

Moldex 7367 Organic Vapor Acid Gas P100 Combo Cartridge Review (2026)

Combination cartridges exist because real-world hazard profiles rarely present in isolation. A spray painter applying two-component polyurethane coatings faces MDI or TDI isocyanates (which require P100 particulate protection) alongside solvent organic vapors from the carrier. A semiconductor fab technician cleaning with hydrofluoric acid faces acid gas alongside process solvents. A crop sprayer working with organophosphate pesticides faces both vapor and respirable particulate from the spray mist. In all of these scenarios, reaching for a single-hazard cartridge means leaving part of the exposure unaddressed.

The Moldex 7367 addresses this by stacking three NIOSH-approved protection levels into one combination assembly: activated carbon for organic vapors, chemisorbent media for acid gases including hydrogen chloride, chlorine, hydrogen fluoride, sulfur dioxide, and hydrogen sulfide, and a P100-rated particulate filter rated at 99.97% efficiency including oil aerosols. It mounts on the Moldex bayonet platform used across the 7000, 7800, and 9000 series respirators, and it changes in seconds without tools.

This review covers everything a buyer needs to evaluate the 7367 honestly: what it protects against and what it explicitly does not, how it stacks up against the 3M 60926 and Honeywell North equivalents, where it sits within the Moldex P100 combo lineup, total cost of ownership for a full respirator setup, and the change-schedule obligations OSHA 29 CFR 1910.134 imposes when no End-of-Service-Life Indicator is present.

Who should buy the Moldex 7367

• Isocyanate spray applicators — MDI and TDI two-component coatings require P100 particulate protection (OSHA requirement); the 7367's combined OV+AG+P100 assembly covers both the aerosol and the vapor phase in a single cartridge.
• Workers in acid-gas environments with co-exposures — semiconductor fab, metal pickling lines, and chemical processing where HCl or SO2 coexists with solvent vapors benefit from combined coverage that a cartridge-only or filter-only approach cannot provide.
• Spray pesticide applicators — organophosphate and pyrethroid applications generate both organic vapors and respirable particulate mist; the P100 stage handles the mist and the OV stage handles the vapor fraction.
• Welders in acid-gas environments — where flux fumes, HF from stainless, or SO2 from electrode coatings accompany weld fume particulate.
• Workers already on the Moldex 7000 or 9000 platform — if the respirator is already Moldex, the 7367 drops in without changing the facepiece, training, or fit-test record.
• Employers needing a single SKU for multi-hazard tasks — one cartridge type covering three hazard categories simplifies inventory and reduces the chance that workers inadvertently use the wrong cartridge for the exposure.
• Higher-risk tasks requiring APF 50 — paired with the Moldex 9000 series full-face respirator, the 7367 provides an APF of 50 — appropriate for tasks where concentrations exceed 10x the OEL.

What the Moldex 7367 does well

Triple NIOSH protection in one assembly

The 7367 stacks organic vapor adsorption (activated carbon granules), acid gas chemisorption (the AG sorbent stage), and P100 particulate filtration (99.97% efficiency, oil-rated) into a single combination assembly. This is not a marketing combination — each protection level is independently NIOSH-approved under 42 CFR 84, and the P100 designation under that standard requires testing with DOP (dioctyl phthalate) oil aerosol, confirming oil-aerosol rated performance. For isocyanate spray applications where OSHA specifically requires P100 or equivalent oil-rated filtration, this matters. A standard OV cartridge without a P100 filter stage does not meet that requirement.

Broad acid gas coverage for chemical process environments

The acid gas stage of the 7367 addresses hydrogen chloride (HCl), chlorine (Cl2), hydrogen fluoride (HF), sulfur dioxide (SO2), and hydrogen sulfide (H2S). This breadth makes the cartridge usable across a wide range of acid-gas environments without selecting a more narrow specialty cartridge. For workers in semiconductor fabs handling HF-based etchants, metal pickling operations using HCl baths, or pulp and paper environments with SO2 co-exposure, the 7367's acid gas stage provides regulatory-compliant coverage when the exposure is at or below the concentration limits for which the cartridge is rated. Review your cartridge selection methodology against current IH monitoring data to confirm the 7367's protection factor is adequate for your specific concentration.

Bayonet mount: tool-free, platform-consistent

The Moldex bayonet mount is a proprietary quarter-turn system shared across all Moldex cartridge types for the 7000, 7800, and 9000 series. A worker can swap cartridge types — from a standard 7300 OV/AG cartridge to the 7367 combination assembly — without tools, in roughly three seconds per side. This matters in programs where workers cycle between tasks with different hazard profiles during a shift. It also simplifies donning/doffing inspection because the mount is visually identical across cartridge types, reducing the chance of a misseated cartridge.

Engineered for the isocyanate use case

Two-component polyurethane spray coatings are among the most common occupational asthma triggers in spray finishing environments. OSHA and NIOSH guidance on isocyanate exposure control specifically calls for supplied-air respirators in high-concentration scenarios, but for lower-concentration or intermittent tasks, a P100-rated air-purifying respirator is often the specified control. The 7367 provides the P100 stage required for the aerosol phase of MDI/TDI spray, the OV stage for the solvent carrier, and the AG stage for any acid-gas byproducts in the spray environment. Pair this with the Moldex 9000 full-face respirator for the APF 50 needed where concentrations exceed 10x the TLV.

Competitive cost against cross-brand equivalents

At approximately the listed price per set, the 7367 is priced competitively against the 3M 60926 and Honeywell North OV/AG/P100 combination cartridges. The full-respirator setup cost of approximately the listed price (two sets) is reasonable for a NIOSH-approved triple-protection assembly. The compact form factor also reduces the added dead-space and breathing resistance that some bulkier combination cartridge designs introduce.

Platform flexibility across three respirator families

The 7367 is compatible with the Moldex 7000 series half-mask (7001, 7002, 7003), the Moldex 7800 series, and the Moldex 9000 series full-face (9001, 9002, 9003). An employer running a mixed fleet of half-mask and full-face Moldex respirators can stock a single cartridge SKU for both, simplifying procurement and reducing the risk of workers using mismatched cartridges.

Where the Moldex 7367 falls short

No ESLI — written change schedule required

This is the most significant compliance implication of the 7367. OSHA 29 CFR 1910.134(d)(3)(iii)(B) requires that when a cartridge lacks an End-of-Service-Life Indicator (ESLI) certified by NIOSH, the employer must implement a change schedule based on objective information or data. That means industrial hygiene monitoring, OSHA HASP documentation, or a validated change schedule from the supplier. You cannot simply use cartridges until a smell is detected — odor breakthrough is not a reliable indicator for many acid gases, and for some contaminants the OEL is below the odor threshold. The Moldex 7667 includes an ESLI (the Smart Cartridge indicator) and extends formaldehyde coverage if those features are required for your program.

No ammonia or methylamine coverage

The 7367's acid gas stage does not cover ammonia (NH3) or methylamine. Workers in agriculture, refrigeration, aquaculture, or any environment with ammonia co-exposure must select the Moldex 7467, which provides ammonia and methylamine coverage alongside P100 filtration. Using the 7367 in an ammonia environment provides no protection against that specific gas — the activated carbon and acid gas sorbent beds in the 7367 are not effective against basic amines at ambient conditions.

1 set per bag — under-ordering is a real risk

The 7367 is sold as one set per bag: one OV+AG cartridge and one P100 filter. A dual-port half-mask or full-face respirator requires two ports to be equipped, which means two bags per respirator. This is a frequently misunderstood purchase unit. An employer ordering for a ten-person crew needs twenty bags — not ten. The product listing and shelf label typically show the per-set price; the per-respirator cost is approximately the listed price. This is not a product flaw, but it requires explicit communication in procurement and in worker training.

Moldex-platform exclusivity

The bayonet mount is Moldex-proprietary. The 7367 cannot be used with 3M, Honeywell, MSA, or other brand half-masks or full-face respirators. Facilities running a mixed-brand respirator fleet will need separate cartridge programs for each facepiece brand, which complicates inventory and creates more opportunity for workers to inadvertently use the wrong cartridge for the wrong respirator. See the full respirator filters and cartridges collection for cross-brand alternatives.

Moldex 7367 vs. 3M 60926 vs. Honeywell North OV/AG/P100

The three major OV+AG+P100 combination cartridges on the market come from Moldex, 3M, and Honeywell North. All are NIOSH-approved under 42 CFR 84 for the same protection categories, but they differ in platform compatibility, ESLI availability, and pricing. The table below covers the key differentiators.

Prices are approximate and subject to change. Verify current pricing before purchasing. Platform compatibility is brand-specific; do not mix cartridge brands with different facepiece brands.

Common questions

What does the Moldex 7367 protect against?

The Moldex 7367 provides NIOSH-approved protection against organic vapors (solvents, paint carriers, adhesive vapors), acid gases including hydrogen chloride (HCl), chlorine (Cl2), hydrogen fluoride (HF), sulfur dioxide (SO2), and hydrogen sulfide (H2S), and P100-rated particulate at 99.97% efficiency including oil aerosols such as isocyanate spray mist. It does not protect against ammonia, methylamine, formaldehyde at IDLH concentrations, carbon monoxide, or oxygen-deficient atmospheres.

How many bags of Moldex 7367 do I need for one respirator?

Two bags. The 7367 is sold as one set per bag — one OV+AG cartridge body plus one P100 filter element. A standard Moldex half-mask or full-face respirator has two cartridge ports and must be equipped on both sides simultaneously. At approximately the listed price per set, the total per-respirator setup cost is approximately the listed price. Ordering only one bag per worker will result in a single port being unequipped and the respirator being non-compliant.

Is the Moldex 7367 approved for isocyanate (MDI/TDI) spray applications?

Yes. NIOSH-approved P100 combination cartridges are the correct air-purifying respirator choice for isocyanate spray applications where the exposure concentration is within the APF of the respirator being used. The 7367's P100 stage is oil-aerosol rated, which is required for isocyanate aerosols. The OV stage addresses the solvent carrier vapors in two-component coatings. For high-concentration isocyanate tasks or spraying in enclosed spaces, supplied-air respirators may be required — consult your industrial hygienist for exposure assessment. See our guide on best respirator cartridges for solvents for related guidance.

Does the Moldex 7367 have an ESLI (End-of-Service-Life Indicator)?

No. The 7367 does not include an ESLI. Under OSHA 29 CFR 1910.134(d)(3)(iii)(B), when a cartridge lacks an ESLI certified by NIOSH, the employer must develop and follow a written cartridge change schedule based on objective information or data. You cannot rely on odor detection as a change signal. If your respiratory protection program requires an ESLI, consider the Moldex 7667 Smart Cartridge, which includes a color-change ESLI.

What is the difference between the Moldex 7367 and the Moldex 7300?

The Moldex 7300 is an organic vapor and acid gas cartridge without a particulate filter. The 7367 is a combination assembly that adds a P100 particulate filter (99.97% efficiency, oil-rated) to the 7300's OV+AG protection. If your exposure includes respirable particulate — spray mist, welding fume, grinding dust, or isocyanate aerosol — the 7367's P100 stage is required. If the hazard is purely gas and vapor with no significant particulate, the 7300 is appropriate and has a lower cost.

What is the difference between the Moldex 7367 and the Moldex 7740?

The Moldex 7740 is a P100 particulate filter with nuisance-level organic vapor and acid gas relief only — it is not NIOSH-approved for gas/vapor hazards. The 7367 is a full combination assembly with NIOSH-approved OV and AG protection alongside the P100 filter. If your environment has gas or vapor hazards above nuisance levels, the 7740 is not the correct choice. Use the 7367 when gas/vapor protection is required alongside particulate filtration.

What is the difference between the Moldex 7367 and the Moldex 7667?

The Moldex 7667 adds two features the 7367 lacks: an ESLI (the Smart Cartridge color-change indicator) and formaldehyde coverage. The 7667 also includes ammonia and methylamine protection. If your exposure includes formaldehyde, ammonia, or if your program requires an ESLI to meet 1910.134 change schedule requirements without an independent IH assessment, the 7667 is the correct choice at a higher cost per set.

Which Moldex respirators is the 7367 compatible with?

The 7367 is compatible with the Moldex 7000 series half-mask (7001, 7002, 7003), the Moldex 7800 series half-mask, and the Moldex 9000 series full-face respirator (9001, 9002, 9003). The Moldex bayonet mount is proprietary — the 7367 cannot be installed on 3M, Honeywell, MSA, or other brand respirators.

What APF does the Moldex 7367 provide?

The Assigned Protection Factor (APF) is determined by the facepiece, not the cartridge. Paired with a Moldex 7000 or 7800 series half-mask, the APF is 10 — meaning it is suitable for environments up to 10 times the occupational exposure limit (OEL). Paired with the Moldex 9000 series full-face respirator, the APF is 50 — suitable for environments up to 50 times the OEL. For isocyanate tasks with higher potential concentrations, the 9000 series full-face pairing is typically required.

Can the Moldex 7367 be used for welding fume protection?

The 7367 can be appropriate for welding applications where the fume contains both acid gas components (such as HF from stainless steel welding or SO2 from electrode coatings) and respirable particulate, and where organic vapor co-exposure exists. However, welding fume selection requires careful hazard assessment — the presence of hexavalent chromium, manganese, or other metals in the fume, as well as CO generation, affects the cartridge choice. The 7367 does not protect against CO. Conduct a full exposure assessment before selecting. See the Moldex cartridge collection for the full range of options.

How do I know when to change the Moldex 7367?

Because the 7367 lacks an ESLI, you must follow a written change schedule established by your employer under OSHA 29 CFR 1910.134(d)(3)(iii)(B). The schedule should be based on industrial hygiene exposure data, manufacturer service life information, or a validated computational model. Do not rely on odor detection as the sole change indicator — odor thresholds for many acid gases are above regulatory limits, meaning breakthrough may have already occurred before you smell anything. Review the applicable sections of our cartridge selection guide for more on change schedule methodology.

Is the Moldex 7367 approved for hydrogen sulfide (H2S) environments?

The 7367's acid gas stage provides coverage for hydrogen sulfide (H2S) as one of the acid gases in the NIOSH-approved protection scope. However, H2S is classified as IDLH at 100 ppm and is an extremely rapid incapacitant at higher concentrations. Air-purifying respirators, including combination cartridges, are not appropriate for IDLH concentrations or oxygen-deficient atmospheres. At concentrations below the IDLH and within the cartridge's service life envelope, the 7367 provides protection as part of a compliant respiratory protection program with a written change schedule.

Can I use the Moldex 7367 for spray painting or automotive refinishing?

Yes, for solvent-based coatings with simultaneous particulate and vapor hazards, the 7367 is a compliant choice on the Moldex platform. For isocyanate-based automotive refinishing (2K urethane clears), the P100 stage meets the oil-aerosol filtration requirement for isocyanate protection. Ensure the respirator facepiece is fit-tested, your program includes a written change schedule for the gas/vapor stage, and the APF of your chosen facepiece is adequate for the concentration levels in your spray booth. See our guide on the best respirator cartridge for solvent applications.

How does the Moldex 7367 compare to the 3M 60926?

Both the 7367 and the 3M 60926 are NIOSH-approved OV+AG+P100 combination cartridges without ESLI. The primary difference is platform compatibility: the 7367 fits Moldex respirators only; the 3M 60926 fits 3M respirators only. For workers already on Moldex facepieces, the 7367 is the correct choice and is typically priced lower per set. For workers on 3M facepieces, the 60926 is the cross-brand equivalent. Do not mix cartridge brands with different facepiece platforms.

Where can I buy the Moldex 7367 and what does it cost?

The Moldex 7367 is reviewed on WC Safety at the 7367 product page and on Amazon. The approximate retail price is the listed price per set (one cartridge + one filter). Because a dual-port respirator requires two sets, budget approximately the listed price per respirator per change cycle. Quantities, availability, and pricing are subject to change — verify current pricing before ordering. The full Moldex cartridge collection is available for bulk orders and alternate cartridge types.

Sources. Requirements referenced here come from OSHA 29 CFR 1910 and the NIOSH recommendations. Where a consensus standard governs, the ANSI document is named in the text.

Related reference

Related reading in this area: 3m secure click d8001 organic vapor respirator cartridge, 3m secure click d8003 organic vapor and acid gas cartridge, 3m secure click d80921 organic vapor p100 combination cartridge 1 pair, 3m versaflo tr-6510n organic vapor/he cartridge 5-pack review — honest, honeywell north 7583p100l vs 3m 60923: organic vapor, acid gas & p100, and organic vapor cartridge vs acid gas cartridge.

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Our methodology

Figures come from the regulation and the published specification, in that order. Derated numbers are calculated, not estimated. Nothing here is presented as a measured result, because we measure nothing.

Researched and written by Steven Eaton, editor of WC Safety. Steven holds no safety certification and does not test products; this page compares what manufacturers and regulators publish, with the gaps in that record marked. Last reviewed August 2026.