The O-Ring, cataloged under National Stock Number 5331-01-668-3401, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Sealcon Llc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Sealcon Llc (CAGE 0UE11) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-668-3401 |
| Primary Part Number | OR-16-BN |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Sealcon Llc |
| 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 |
|---|---|
| OR-16-BN PRIMARY | Sealcon Llc (USA) |
| Reference | Meaning |
|---|---|
| 7A29048 FIND NO 26 | 5/1 Secondary reference Federal Equipment Co |
| 7A29048 | D/9 Drawing number reference only Federal Equipment Co |
NSN 5331-01-668-3401 is a O-Ring, manufactured by Sealcon Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-668-3401 has 1 manufacturer part number on file: OR-16-BN (Sealcon Llc).
1 possible match (shared part number, not a government interchangeability claim): 5998-01-681-5182. Verify interchangeability with system specifications before substitution.
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.