The O-Ring, cataloged under National Stock Number 5331-01-373-3274, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Alfa Laval Inc. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Ministry of Defence, Des Ships, Marine Propulsion Systems, Maritime Spares (CAGE KCTX8); Alfa Laval Copenhagen A/s (CAGE R2989); Alfa Laval Inc (CAGE 71871) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-373-3274 |
| Primary Part Number | 9844099903 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Alfa Laval Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 030140 R1 DL07640 | Ministry of Defence, Des Ships, Marine Propulsion Systems, Maritime Spares (GBR) |
| 40999-03 | Alfa Laval Copenhagen A/s (DNK) |
| 9844099903 PRIMARY | Alfa Laval Inc (USA) |
| Reference | Meaning |
|---|---|
| 984.40999.03 | 5/9 Secondary reference Alfa Laval Inc |
NSN 5331-01-373-3274 is a O-Ring, manufactured by Alfa Laval Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-373-3274 has 3 manufacturer part numbers on file: 030140 R1 DL07640 (Ministry of Defence, Des Ships, Marine Propulsion Systems, Maritime Spares), 40999-03 (Alfa Laval Copenhagen A/s), 9844099903 (Alfa Laval Inc).
No hazard code in the DLA record (HMIC N). 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.