Description
The MSA 484923 is the filter replacement kit for 81857 air-line filter for the MSA Constant Flow Air-Line Respirator accessories. Ships in 1–2 business days; most orders arrive in 3–7 business days. Constant Flow Air-Line Respirator accessories: every part and NIOSH approval on one page.
MSA 484923 specifications
| Item | Manufacturer data |
|---|---|
| MSA part number | 484923 |
| 484923 | Filter Replacement Kit (includes 8 items) for Air-Line Filter 81857 (MSA Air-Line Filter 81857 instructions); Replacement Filter Kit (MSA Pocket Guide to Air-Line Systems 0114-14-MC) |
| MSA description | 484923 Filter Replacement Kit for Air-Line Filter 81857 |
| Fits | Air-Line Filter 81857 (and 484856, 488041 per their manuals) |
Source: MSA Constant Flow Air-Line Respirators and Accessories data sheet 0112-38-MC; MSA Air-Line Filter 81857 instructions; MSA Abrasi-Blast Respirators data sheet 0112-37-MC; NIOSH Certified Equipment List (November 2026); MSA Pocket Guide to Air-Line Systems 0114-14-MC.
Constant Flow Air-Line Respirator accessories system data
| Item | Manufacturer data |
|---|---|
| Type | SAR (Type C, continuous flow) accessories |
Source: MSA Constant Flow Air-Line Respirators and Accessories data sheet 0112-38-MC; MSA Air-Line Filter 81857 instructions; MSA Abrasi-Blast Respirators data sheet 0112-37-MC; NIOSH Certified Equipment List (November 2026).
NIOSH approvals recorded for the Constant Flow Air-Line Respirator accessories
| Approval | CEL product line |
|---|---|
| TC-19C-0434 | Constant Flow Airline Type C, Continuous Flow, Supplied-Air Respirtor |
| TC-19C-0435 | Constant Flow Airline Type C, Continuous Flow, Supplied-Air Respirator |
| TC-19C-0600 | Constant Flow Airline Respirator, w/G1 Full Facepieces, Continuous Flow, Type C, Supplied-Air Respirator |
| TC-19C-0601 | same, w/G1 Full Facepieces |
| TC-84A-5719 | Model Duo-Flo Tight Fitting, Continuous Flow, Type CE, Combination Supplied Air and Air Purifying Respirator (P100) |
| TC-84A-6821 | Constant Flow Duo Twin Series Full Facepiece Combination Air Purifying and Supplied Air Respirator (P100) |
Source: NIOSH Certified Equipment List (November 2026).
Approved air-supply hose (MSA data sheet)
| Hose | Lengths and part numbers |
|---|---|
| Neoprene Air-Supply Hose, Brass Hose Coupling | 8 ft.: 481071; 15 ft.: 455020; 25 ft.: 455021; 50 ft.: 455022 |
| Neoprene Air-Supply Hose, Stainless Steel Hose Coupling | 8 ft.: 481077; 15 ft.: 481078; 25 ft.: 481079; 50 ft.: 481080 |
| PVC Air-Supply Hose, Brass Hose Coupling | 8 ft.: 481051; 15 ft.: 471511; 25 ft.: 471512; 50 ft.: 4715123 (as printed); 100 ft.: 484225 |
Source: MSA Constant Flow Air-Line Respirators and Accessories data sheet 0112-38-MC.
Assigned protection factor
| Respirator type (OSHA Table 1) | APF |
|---|---|
| Supplied-air respirator, continuous flow, full facepiece | 1000 |
| Supplied-air respirator, continuous flow, helmet/hood (manufacturer-tested to APF 1,000) | 1000 |
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)).
Catalog data
| Item | Manufacturer data |
|---|---|
| Style | Airline Filter Kit |
Source: Manufacturer published product data as carried in our catalog.
A replacement airline filter kit for MSA Type C supplied air setups that connect air supply hoses to the manifold and air source. Replace it on schedule to keep breathing air clean.
- Replacement airline filter kit
- For MSA Type C supplied air systems
- Replacement part for MSA supplied air systems
MSA 484923 questions
What is the MSA 484923? Filter Replacement Kit.
What does the 484923 fit? Air-Line Filter 81857 (and 484856, 488041 per their manuals) (MSA).
Guides: supplied-air respirators and Grade D air · assigned protection factors · all respirators by model and hazard.
