The Plug,breathing Appa, cataloged under National Stock Number 4240-01-122-3573, 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 Midland Diving Equipment Limited. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Plug,breathing Appa |
| FSC / FSG | 4240 — Safety and Rescue Equipment (FSG 42) |
| Manufacturers | Midland Diving Equipment Limited (CAGE K8011); Msi-Defence Systems Ltd (CAGE U7384) |
| Parameter | Value |
|---|---|
| NSN | 4240-01-122-3573 |
| Primary Part Number | DP11213 |
| Item Name | Plug,breathing Appa |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| Manufacturer | Midland Diving Equipment Limited |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Part Number | Manufacturer |
|---|---|
| DP11213 | Midland Diving Equipment Limited (GBR) |
| DP11213 | Msi-Defence Systems Ltd (GBR) |
| Reference | Meaning |
|---|---|
| 9109-12 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| DP11213 | 5/9 Secondary reference Ministry of Defence, De&s Underwater and Electronic Warfare Pt (uew Ipt) |
| DP11213 | 5/9 Secondary reference Ministry of Defence, De&s Underwater and Electronic Warfare Pt (uew Ipt) |
| 9109-12 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4240-01-122-3573 is a Plug,breathing Appa, manufactured by Midland Diving Equipment Limited, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
NSN 4240-01-122-3573 has 2 manufacturer part numbers on file: DP11213 (Midland Diving Equipment Limited), DP11213 (Msi-Defence Systems Ltd).
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.