The O-Ring, cataloged under National Stock Number 5331-01-381-1691, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Setra Systems, Inc. Dba Gems Sensors. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | Setra Systems, Inc. Dba Gems Sensors (CAGE 04034) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-381-1691 |
| Primary Part Number | 123993 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Setra Systems, Inc. Dba Gems Sensors |
| 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 |
|---|---|
| 123993 PRIMARY | Setra Systems, Inc. Dba Gems Sensors (USA) |
| Reference | Meaning |
|---|---|
| FS-124010 ITEM NO.5 | 5/9 Secondary reference Setra Systems, Inc. Dba Gems Sensors |
NSN 5331-01-381-1691 is a O-Ring, manufactured by Setra Systems, Inc. Dba Gems Sensors, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-381-1691 has 1 manufacturer part number on file: 123993 (Setra Systems, Inc. Dba Gems Sensors).
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.