3M 6700 Small Full Face Respirator Mask

3M 6700 Small Full Face Respirator — 3M 6000 Series, NIOSH TC-14C, APF 50

The 3M 6700 is the small-size full-facepiece respirator in the 3M 6000 Series — delivering NIOSH 42 CFR 84 TC-14C approved APF 50 protection with integrated eye and face coverage for workers with smaller facial profiles. With a soft pliable face seal, 3M Cool Flow™ exhalation valve, and wide-view scratch-resistant polycarbonate lens, the 6700 is the correct choice when a half-mask's APF 10 is insufficient or when the eyes and face require simultaneous protection from chemical splash, aerosol, or vapor. For medium and large sizes in the same series, see the 3M 6800 Medium and 3M 6900 Large. If you are unsure of your size, start with the 6800 — OSHA 1910.134(f)(2) requires fit testing before operational deployment regardless of size selected.

Key Features

• APF 50 — 5× the protection of a half-mask: For environments where contaminant concentrations exceed 10× the OEL, or where eye and face protection from chemical splash is required simultaneously with respiratory protection, the 6700 delivers the highest Assigned Protection Factor available for air-purifying respirators under OSHA 1910.134
• Integrated eye and face protection: The wide-view polycarbonate facepiece lens eliminates the need to coordinate a separate respirator with safety glasses or chemical splash goggles — a single unit protects the respiratory tract, eyes, and face simultaneously, reducing donning time and eliminating the gap between respirator seal and separate eyewear
• 3M Cool Flow™ exhalation valve: Proprietary one-way valve reduces heat and moisture inside the facepiece, lowers CO₂ rebreathing during extended operations, and decreases exhalation resistance — a critical comfort feature for tasks requiring prolonged wear such as spray painting, confined space entry, and chemical processing shifts
• Soft pliable face seal: The thermoplastic face seal material conforms closely to facial contours within the small size range to minimize leak paths and maintain an effective positive pressure seal — directly impacts APF delivery in actual use conditions
• Wide-view scratch-resistant lens: Broad field of vision reduces situational awareness limitations in plant and construction environments; polycarbonate construction rated ANSI Z87.1 for impact and splash resistance; scratch-resistant coating extends service life in abrasive environments
• Lightweight construction: The 3M 6000 series is engineered as one of the lightest full-face respirator platforms in its class — reducing neck fatigue and thermal load during full-shift operations compared to heavier alternatives
• Universal 3M bayonet connector: The same bayonet geometry used across the 3M 6500 and 7500 half-mask series means the full 3M 6000-series cartridge library is accessible — OV, AG, P100, multi-gas combinations, and specialty cartridges at APF 50

Applications — When to Use the 3M 6700

The 3M 6700 is the correct respirator when the work task involves one or more of the following conditions:

• Spray painting and coating operations: Isocyanates (TDI, MDI) in two-component urethane coatings require full-face protection at APF 50 in many OSHA and ACGIH compliance scenarios — half-masks are not adequate when OEL multiples exceed 10×. The 6700 with 3M 60921 (OV/P100) or 60926 (OV/AG/P100) provides compliant coverage and simultaneously eliminates solvent splash to the eyes
• Confined space entry: OSHA 29 CFR 1910.146 confined space programs frequently require APF 50 or SCBA for initial entry into permit-required confined spaces with unknown or elevated atmospheric hazards. The 6700 provides the highest APF available in an air-purifying configuration for smaller-faced workers assigned to confined space rescue or monitoring teams
• Chemical handling and laboratory work: Acid handling, solvent degreasing, chemical weighing, and reactor operations where atmospheric concentrations exceed 10× OEL or where liquid splash to the face is a defined hazard require full-face protection. The 6700 with an appropriate cartridge addresses both respiratory and ocular routes of exposure
• Asbestos and lead abatement: OSHA 1926.1101 (asbestos, Class I and II) requires full-face respirators at APF 50 for many operations. The 6700 with 3M 2091 P100 filters meets the respiratory protection requirement for smaller-faced workers in abatement programs
• Silica and toxic dust environments: High-crystalline-silica operations (construction cutting, demolition, sandblasting) and heavy metal environments (lead paint removal, cadmium operations) that exceed 10× OEL require APF 50 — the 6700 with P100 filters provides compliant protection for smaller-faced workers in these programs
• Semiconductor and pharmaceutical manufacturing: Multi-hazard chemical environments where OV, acid gas, and particulate exposure occur simultaneously — the 6700 with 3M 60926 (OV/AG/P100) or 60927 (Mercury/OV/AG/P100) addresses multiple hazard classes in a single cartridge
• Pesticide application: Many USEPA-registered pesticide labels specify full-face APF 50 respiratory protection for mixing/loading and closed-system operations. The 6700 with an appropriate OV or combination cartridge satisfies this label requirement while protecting the eyes from pesticide splash

APF 50 vs. Half-Mask — When Full-Face Is Required

Half-mask respirators (APF 10) are appropriate when airborne contaminant concentrations do not exceed 10× the Occupational Exposure Limit and the eyes and face do not require simultaneous protection. The 3M 6700 is required when any of the following conditions apply:

APF values per OSHA 29 CFR 1910.134 Appendix A. No air-purifying respirator is appropriate in atmospheres immediately dangerous to life or health (IDLH) — use SCBA or supplied-air respirator in IDLH conditions.

Who Needs the Small Size?

The 6700 is the correct size selection when OSHA-required fit testing confirms an inadequate seal in the medium (6800). Smaller facial dimensions that commonly indicate small-size fit include:

• Women workers in chemical plants, laboratories, semiconductor fabrication, and pharmaceutical manufacturing — smaller facial profiles frequently cannot achieve adequate seal in medium or large full-face respirators; the 6700 is the industry-standard small-size selection for these workers
• Workers who failed fit testing in the 6800 (medium) — if OSHA-required quantitative or qualitative fit testing reveals inadequate seal in medium, the 6700 is the correct next step before operational deployment
• Workers with shorter chin-to-nose distance — fit testing is the definitive size selection method; if unsure, always begin with medium (6800) and confirm via OSHA 1910.134(f)(2) annual fit test

Important: Do not assume size based on general body size or height. Facial dimensions — not overall stature — determine respirator fit. The 3M 6700, 6800, and 6900 use the same cartridges, the same NIOSH approval, and deliver the same APF 50 — only the facepiece geometry differs.

Compatible Cartridges & Filters

The 3M 6700 uses the standard 3M bayonet twist-lock cartridge connector — the same geometry as the 3M 6500 and 7500 half-mask series — giving access to the complete 3M 6000 series cartridge and filter library. Select cartridges based on the specific hazard confirmed through your site industrial hygiene assessment:

Important: 3M bayonet cartridges are NOT compatible with Honeywell North, MSA, Moldex, or other brands. Cartridge selection must be confirmed through a site-specific hazard assessment — see the full lineup at 3M Respirator Cartridges & Filters at WC Safety →

3M 6000 Series — All Sizes

3M 6700 vs. Alternatives

APF 10 applies to all properly fit-tested NIOSH-approved half-masks. APF 50 applies to full-facepiece respirators. No air-purifying respirator is appropriate in IDLH atmospheres — SCBA or SAR required. Cartridge platforms are brand-specific and not interchangeable between 3M, North, MSA, or Moldex.

OSHA Compliance & Fit Testing

The 3M 6700 is NIOSH approved under 42 CFR 84 TC-14C — the full-facepiece tight-fitting air-purifying respirator approval. Under OSHA 29 CFR 1910.134 Appendix A, a properly fit-tested full-facepiece respirator carries an Assigned Protection Factor of 50 — the highest level available for air-purifying respirators and 5× the APF 10 of any half-mask.

• Fit testing required: OSHA 1910.134(f)(2) mandates annual fit testing — qualitative (QLFT) or quantitative (QNFT) — before operational use and when switching to a different facepiece model or size
• User seal check before each use: Positive and negative pressure seal checks per OSHA 1910.134 Appendix B-1 must be performed each time the respirator is donned before entering the work area
• Written respiratory protection program: Required for all workplaces where respirators are used under OSHA 1910.134(c) — must include written program, hazard assessment, medical evaluation procedures, and cartridge change-out schedule
• Medical evaluation: OSHA 1910.134(e) requires a physician or other licensed healthcare professional (PLHCP) to evaluate each worker's ability to use a respirator before fit testing or operational deployment
• Cartridge change-out schedule: OSHA 1910.134(d)(3)(iii)(B)(1) requires a documented change-out schedule for gas/vapor cartridges based on objective data — end-of-service life indicators (ESLI) or industrial hygiene assessment data

Frequently Asked Questions

What does the 3M 6700 protect against?

The 6700 facepiece is the platform — protection depends entirely on the installed cartridge or filter. With 3M P100 filters (2091): 99.97% filtration of oil-proof particulates (silica, asbestos, lead, welding fume) at APF 50. With 3M OV cartridges (6001): organic vapors including solvents, hydrocarbons, and aromatic compounds at APF 50. With 3M 60921 / 60926 combination cartridges: multiple simultaneous hazards at APF 50. The polycarbonate facepiece lens additionally protects eyes and face from chemical splash, aerosol, and vapor — ANSI Z87.1 rated.

What is APF 50 and when do I need full-face instead of a half-mask?

APF 50 means the respirator may be used in environments where contaminant concentration is up to 50× the Occupational Exposure Limit — five times the protection level of a half-mask (APF 10). Choose full-face (APF 50) over a half-mask when: (1) airborne concentration exceeds 10× OEL, (2) eye or face splash from chemicals, aerosols, or vapor is a hazard, (3) OSHA substance standards require APF 50 (asbestos Class I, some Cr VI operations), or (4) a pesticide label specifies a full-face respirator. No air-purifying respirator is appropriate above 50× OEL — SCBA or SAR is required in IDLH atmospheres.

Will 3M cartridges for the 6500 or 7500 half-masks fit the 6700?

Yes. The 3M 6000 series full-face respirator uses the identical 3M bayonet twist-lock connector as the 3M 6500 and 7500 half-mask series. All 3M 6000 series cartridges and filters are fully compatible. 3M bayonet cartridges are NOT compatible with Honeywell North, MSA, Moldex, or other brands — the bayonet geometries are not interchangeable.

How do I know if I need the small (6700) vs. medium (6800)?

Facial dimensions — not body size or height — determine the correct respirator size. The definitive selection method is OSHA-required fit testing. Most adults begin with medium (6800) — it is the recommended starting size for the majority of workers. If medium fails OSHA quantitative or qualitative fit testing, try small (6700). All three sizes (6700, 6800, 6900) use identical cartridges and deliver identical APF 50 — only facepiece geometry differs. OSHA 1910.134(f)(2) requires annual fit testing before operational deployment regardless of size selected.

Can the 3M 6700 be used for spray painting with isocyanates?

Yes, with the correct cartridge. Two-component urethane coatings containing TDI or MDI isocyanates are sensitizers with very low OELs — many spray painting operations require APF 50 full-face protection at operational concentrations. The 3M 6700 with 3M 60921 (OV/P100) cartridges is appropriate for most spray painting applications. Confirm that airborne concentrations do not exceed 50× the OEL for the specific isocyanate — if they do, supplied-air (SAR) or SCBA is required.

Is the 3M 6700 approved for asbestos abatement?

The 3M 6700 with 3M P100 filters (2091) provides the NIOSH TC-14C APF 50 protection required for asbestos Class I and Class II operations under OSHA 1926.1101. Confirm compliance with your site-specific asbestos respiratory protection program — OSHA requires written program documentation, medical evaluation, annual fit testing, and a change-out schedule for all asbestos work classifications.

How long do 3M cartridges last in the 6700?

Cartridge service life depends on contaminant type, concentration, humidity, and workload — not a fixed calendar interval. P100 particle filters (2091, 2097) should be replaced when breathing resistance increases noticeably or when physically damaged. Gas/vapor cartridges (6001, 60921, 60926) must be replaced per a written change-out schedule based on industrial hygiene data or end-of-service life indicators (ESLI) — OSHA 1910.134(d)(3)(iii)(B)(1) requires this documentation before use. There is no universal "X shifts" guidance that applies across all environments.

How do I clean and maintain the 3M 6700?

Remove cartridges and the exhalation valve cover before cleaning. Wash with mild soap and warm water. Clean the inside of the lens with a soft cloth — do not use abrasive materials on the polycarbonate. Rinse thoroughly to remove all soap residue. Air dry in a clean location away from direct sunlight and heat. Inspect the face seal, exhalation valve, and lens before each use. Replace the facepiece if the face seal is cracked or permanently distorted, or if the lens is scratched enough to impair vision or violate ANSI Z87.1 optical requirements.

Does the 3M 6700 work in IDLH atmospheres?

No. No air-purifying respirator — regardless of APF rating — is appropriate in atmospheres Immediately Dangerous to Life or Health (IDLH). IDLH conditions require SCBA (self-contained breathing apparatus) or a combination SAR/SCBA system per OSHA 1910.134(d)(2)(i). The 3M 6700 is rated to a maximum APF of 50 and is appropriate only in atmospheres with known contaminant identity and measured concentrations below 50× the OEL.

Can the 3M 6700 be shared between workers?

Sharing tight-fitting respirators between workers is not permitted under OSHA 1910.134 without proper cleaning, disinfection, and re-fit-testing. Each worker must have their own fit test result on record for the specific respirator model and size. If sharing is operationally necessary, each user must be fit-tested on the shared unit and it must be cleaned and disinfected between uses per OSHA 1910.134 Appendix B-2.

What is the difference between the 3M 6700 and the 3M 6800?

The 3M 6700 and 6800 are identical in every respect — NIOSH TC-14C approval, APF 50, 3M Cool Flow™ valve, cartridge compatibility, lens material — except facepiece size. The 6700 is sized for smaller facial profiles; the 6800 is sized for medium (most adults). Both accept all 3M 6000 series cartridges. The correct size is determined by OSHA-required fit testing, not by preference or estimate. If you have not been fit-tested, start with the 6800.

Where can I find compatible cartridges for the 3M 6700?

Browse the complete 3M 6000 series cartridge and filter lineup — including 6001 OV, 6002 AG, 2091 P100, 60921 OV/P100, 60926 OV/AG/P100, and specialty cartridges — at 3M Respirator Cartridges & Filters at WC Safety →