The O-Ring, cataloged under National Stock Number 5331-01-658-4324, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Naval Sea Systems Command (CAGE 53711); Naval Inventory Control Point Mechanicsburg (CAGE 03950) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-658-4324 |
| Primary Part Number | 552-8556761 BOM ITEM 05 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 552-8556761 BOM ITEM 05 | Naval Sea Systems Command (USA) |
| AS568-212 OXYGEN CLEANCP | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| AS568-212 OXYGEN CLEAN | 3/1 Design control — primary reference Sae International Dba Sae International |
| 552-8556761 BOM ITEM 05CP | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| AS568-212 OXYGEN CLEAN | 3/9 Design control — primary reference U.S. Government activity |
NSN 5331-01-658-4324 is a O-Ring, manufactured by Naval Sea Systems Command, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-658-4324 has 2 manufacturer part numbers on file: 552-8556761 BOM ITEM 05 (Naval Sea Systems Command), AS568-212 OXYGEN CLEANCP (Naval Inventory Control Point Mechanicsburg).
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.