The Respirator,air Filtering, cataloged under National Stock Number 4240-01-251-9459, 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 Honeywell Safety Products Usa, Inc.. Government technical data includes 10 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4240-01-251-9459 |
| Primary Part Number | B230099 |
| Item Name | Respirator,air Filtering |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| Manufacturer | Honeywell Safety Products Usa, Inc. |
| Status | ACTIVE |
| Mask Filter Quantity | 2 |
| Filter Type | CARTRIDGE AND FILTER PAD |
| Mask Type | HALF FACEPIECE |
| Material Type | ELASTIC |
| Criticality Code Justification | FEAT |
| Adjustability | ADJUSTABLE |
| Exhaust Valve | INCLUDED |
| Head Harness | INCLUDED |
| Filter Replaceability | REPLACEABLE |
| Material | RUBBER SILICONE CLASS Q MASK |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| B230099 PRIMARY | Honeywell Safety Products Usa, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 2300-99 | 5/9 Secondary reference Survivair Corp Sub of Comasec Inc |
| B2300-99 | 3/9 Design control — primary reference Survivair Corp Sub of Comasec Inc |
NSN 4240-01-251-9459 is a Respirator,air Filtering, manufactured by Honeywell Safety Products Usa, Inc., classified under FSC 4240, Safety and Rescue Equipment. Status: active.
NSN 4240-01-251-9459 has 1 manufacturer part number on file: B230099 (Honeywell Safety Products Usa, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 4330-01-472-5977. Verify interchangeability with system specifications before substitution.
Key specifications for B230099: Mask Filter Quantity: 2; Filter Type: CARTRIDGE AND FILTER PAD; Mask Type: HALF FACEPIECE; Material Type: ELASTIC. 10 specifications are 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.