The Cartridge,respirator,air Filteri, cataloged under National Stock Number 4240-01-394-6330, is classified within Federal Supply Class 4240 (Safety and Rescue Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. The manufacturer of record is Mine Safety Appliances Company. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4240-01-394-6330 |
| Primary Part Number | 496081 |
| Item Name | Cartridge,respirator,air Filteri |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| Manufacturer | Mine Safety Appliances Company |
| Status | ACTIVE |
| Hazard Protection Feature | DUST AND MIST |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 496081 PRIMARY | Mine Safety Appliances Company (USA) |
NSN 4240-01-394-6330 is a Cartridge,respirator,air Filteri, manufactured by Mine Safety Appliances Company, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
NSN 4240-01-394-6330 has 1 manufacturer part number on file: 496081 (Mine Safety Appliances Company).
Key specifications for 496081: Hazard Protection Feature: DUST AND MIST; Special Features: ROUND, SINGLE-PORT OPTIFILTER XL CARTRIDGE CAN BE INTERCHANGED WITH THE COMFO ELITE UNO SINGLE-CARTRIDGE, HALF MASK RESPIRATOR, AND THE FULL FACEPIECE OPTIMAIR MM AND OPTIMAIR 6A PAPRS, AND SPECIALLY EQUIPPED PRESSURE DEMAND OR CONSTANT FLOW DUO-FLO AIR-LINE RESPIRATORS, MORE RESISTANT TO WATER WHEN USED IN A DECONTAMINATION SHOWER THAN TRADITIONAL HEPA FILTERS BECAUSE ITS INLET ORIFICE CAN BE CAPPED BY A VALVED STORAGE PLUG THAT PERMITS CONTINUOUS RESPIRATION,APPROVED FOR RADIONUCLIDES, TC-21C-150 NIOSH/MSHA APPROVAL A. 1 specification is documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.