3M FF-401/FF-402/FF-403 Ultimate FX Full Facepiece Reusable Respirator

The 3M FF-400 Series Ultimate FX full facepiece respirator, part numbers FF-401 (Small), FF-402 (Medium), FF-403 (Large), is a reusable full facepiece with the 3M bayonet cartridge connection. Face seal Silicone rubber; Nose cup Silicone rubber/polybutylene terephthalate; Inhalation valve Silicone rubber/nylon; Exhalation valve Silicone rubber/polybutylene terephthalate, polycarbonates; Head harness Silicone rubber; Lens Polycarbonate. Ships in 1–2 business days; most orders arrive in 3–7 business days. FF-400 Series: every cartridge, filter, part and NIOSH approval on one page.

3M FF-400 Series Ultimate FX full facepiece specifications

Source: 3M FF-400 Series specifications (US); 3M FF-400 user instructions; 3M FF-400 Series data sheet (ANZ edition); 3M Reusable Respirator Catalog (NIOSH); 3M.com product listings (November 2026); NIOSH Certified Equipment List (November 2026).

3M stock numbers on this page

Source: 3M.com product listings (November 2026); distributor product pages where 3M.com returned no card.

Cartridges and filters for the FF-400 Series

NIOSH approved with 3M 6000 Series cartridges, 2000/2200/7000/5000 Series filters, 3M Versaflo TR-600/TR-800 PAPR and 3M Dual Airline systems (3M FF-400 Series specifications (US))

Source: 3M Cartridge and Filter Summary (2024); 3M Reusable Respirator Catalog (NIOSH).

NIOSH approvals naming the FF-400 Series

The NIOSH Certified Equipment List carries 552 current 3M Company approvals whose product line names it: 3 supplied-air (TC-19C), 2 powered air-purifying (TC-21C), 62 chemical cartridge (TC-23C), 485 air-purifying particulate (TC-84A). The first 12:

Source: NIOSH Certified Equipment List (November 2026), manufacturer 3M Company.

CEL product-line groups recorded for this series: TC-84A-4808.. (95 approvals) "FF-400 Series Full Facepiece Air Purifying Respirator"; TC-84A-5120..5141; TC-23C-2426..2432 "FF-400 Series Full Facepiece Air Purifying Respirator"; TC-23C-2478/2479; TC-23C-2805 with Chemical Cartridge; TC-84A-8784 "FF-400 series (part numbers FF-401, FF-402 and FF-403) full facepiece with filter"; TC-23C-3453 "... and cartridge"; TC-19C-0459/0460/0461 supplied air HP/LP/combination; TC-21C-1332 / 23C-4007..4013 TR-600; TC-21C-1337 / 23C-4042..4048 TR-800.

Assigned protection factor

Source: OSHA 29 CFR 1910.134 Table 1 (Assigned Protection Factors). The APF applies only when the respirator is used in a program that meets the standard, including fit testing of tight-fitting facepieces (29 CFR 1910.134(f)) and a cartridge change schedule (29 CFR 1910.134(d)(3)(iii)). 3M catalog APF table: half facepiece and full facepiece respirators that have been qualitatively fit tested have an APF of 10; full facepiece respirators, when quantitatively fit tested, have an APF of 50.

3M use limitations

may be used in contaminant concentrations up to 10 times the Permissible Exposure Limit (PEL) with approved 3M cartridges and filters, and up to 50 times the PEL with approved 3M supplied air systems (3M 6000 Series half facepiece user instructions use limitations)

Do not use with beards or other facial hair or other conditions that prevent a good seal between the face and the faceseal of the respirator. (3M 6000 Series half facepiece user instructions)

NOTE: Not NIOSH or Brazil Ministry of Labor approved for use against methylbromide, radioiodine, or ozone. (3M 6000 Series half facepiece user instructions Table 6)

NIOSH Cautions and Limitations letters recorded for 6000 half: A, B, C, D, E, G, H, J, K, L, M, N, O, S (3M 6000 Series half facepiece user instructions)

Source: 3M 6000 Series half facepiece user instructions.

3M catalog comparison: FF-400 Series

Source: 3M Reusable Respirator Catalog (NIOSH), "Selecting a 3M Reusable Respirator". * When used with 3M Scott AV-632 Bayonet Adapter. ** Approved configurations vary across facepiece models. Confirm system approval before use.

Catalog data

Source: Manufacturer published product data as carried in our catalog.

3M's Ultimate FX full facepiece respirator has a Scotchgard-coated lens, bonded silicone gaskets and a 6-strap harness, and connects to 3M 6000 series cartridges or 2000/5000/7000 series filters. It is sized small, medium and large.

• Provides a wide field of view
• Paint and stain-resistant lens, 3M's exclusive Scotchgard® coating causes some liquids to bead up on the surface so they can be wiped off easily
• Bonded silicone gaskets, eliminates loose gaskets that can be lost
• Easy to use respirator attachments twist on and off easily for quick assembly and disassembly
• Low profile bayonet design

3M FF-400 Series questions

What cartridges fit the 3M FF-400 Series? NIOSH approved with 3M 6000 Series cartridges, 2000/2200/7000/5000 Series filters, 3M Versaflo TR-600/TR-800 PAPR and 3M Dual Airline systems (3M FF-400 Series specifications (US))

What sizes does the FF-400 Series come in? FF-401 (Small), FF-402 (Medium), FF-403 (Large).

What is the FF-400 Series made of? Face seal Silicone rubber; Nose cup Silicone rubber/polybutylene terephthalate; Inhalation valve Silicone rubber/nylon; Exhalation valve Silicone rubber/polybutylene terephthalate, polycarbonates; Head harness Silicone rubber; Lens Polycarbonate (3M FF-400 Series specifications (US)). Approximate Weight: 570 grams (3M FF-400 Series specifications (US)).

What is the assigned protection factor of a full facepiece? OSHA Table 1 assigns an APF of 50 to an air-purifying full facepiece, 1000 in continuous-flow supplied-air mode.

Guides: half mask vs full facepiece · assigned protection factors · what OSHA requires for fit testing · cleaning and storing respirators · cartridge change schedules · P100 vs N95 vs R95 · all respirators by model and hazard.