The O-Ring, cataloged under National Stock Number 5331-01-540-3909, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Aqua-Chem, Inc.. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-540-3909 |
| Primary Part Number | 738-7569-13 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Aqua-Chem, Inc. |
| Status | ACTIVE |
| Material | RUBBER SYNTHETIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 738-7569-13 PRIMARY | Aqua-Chem, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 5331PL0792715 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5331-01-540-3909 is a O-Ring, manufactured by Aqua-Chem, Inc., classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-540-3909 has 1 manufacturer part number on file: 738-7569-13 (Aqua-Chem, Inc.).
Key specifications for 738-7569-13: End Item Identification: DISTLLATE COOLER 738-7569,NSN 304 0-01-3978; Material: RUBBER SYNTHETIC. 1 specification is documented in the U.S. Government catalog.
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.