The O-Ring, cataloged under National Stock Number 5331-01-507-3931, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Imi Cornelius Inc.. The record lists 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | Imi Cornelius Inc. (CAGE 51267); Naval Sea Systems Command (CAGE 53711) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-507-3931 |
| Primary Part Number | 31525010 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Imi Cornelius Inc. |
| 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 |
|---|---|
| 31525010 PRIMARY | Imi Cornelius Inc. (USA) |
| 564-7067543-F141 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| H652-1206-F141 | 5/2 Secondary reference U.S. Government activity |
NSN 5331-01-507-3931 is a O-Ring, manufactured by Imi Cornelius Inc., classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-507-3931 has 2 manufacturer part numbers on file: 31525010 (Imi Cornelius Inc.), 564-7067543-F141 (Naval Sea Systems Command).
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.