The O-Ring, cataloged under National Stock Number 5331-01-731-2803, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Niantic Seal Inc Dba Atco. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Niantic Seal Inc Dba Atco (CAGE 59871) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-731-2803 |
| Primary Part Number | NSI10386-46 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Niantic Seal Inc Dba Atco |
| Status | ACTIVE |
| 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 |
|---|---|
| NSI10386-46 PRIMARY | Niantic Seal Inc Dba Atco (USA) |
| Reference | Meaning |
|---|---|
| 7636663 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 5331-01-731-2803 is a O-Ring, manufactured by Niantic Seal Inc Dba Atco, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-731-2803 has 1 manufacturer part number on file: NSI10386-46 (Niantic Seal Inc Dba Atco).
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.