The Back-Up Ring,preformed Packing, cataloged under National Stock Number 5330-01-660-0632, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 13 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Back-Up Ring,preformed Packing |
| FSC / FSG | 5330 — Packing and Gasket Materials (FSG 53) |
| Manufacturers | Naval Sea Systems Command (CAGE 53711) |
| Parameter | Value |
|---|---|
| NSN | 5330-01-660-0632 |
| Primary Part Number | 801-6641060-372-4 |
| Item Name | Back-Up Ring,preformed Packing |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 801-6641060-372-4 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| AS5860P09-117 | 5/9 Secondary reference U.S. Government activity |
| 2633-228-01-372-4 | 5/9 Secondary reference U.S. Government activity |
| 801-6641060-360-3 | 5/9 Secondary reference Naval Sea Systems Command |
| 2633-228-01-374-4 | 5/9 Secondary reference U.S. Government activity |
| AS5860 | 3/1 Design control — primary reference Sae International Dba Sae International |
| 2633-228-01-360-3 | 5/9 Secondary reference U.S. Government activity |
| 801-6641060-374-4 | 5/9 Secondary reference Naval Sea Systems Command |
| 801-6641060-362-3 | 5/9 Secondary reference Naval Sea Systems Command |
| 801-6641060-378-4 | 5/9 Secondary reference Naval Sea Systems Command |
| 218085945 | 5/9 Secondary reference U.S. Government activity |
| 2633-228-01-362-3 | 5/9 Secondary reference U.S. Government activity |
| AS5860P09-117 | 5/9 Secondary reference Sae International Dba Sae International |
| 2633-228-01-378-4 | 5/9 Secondary reference U.S. Government activity |
NSN 5330-01-660-0632 is a Back-Up Ring,preformed Packing, manufactured by Naval Sea Systems Command, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-660-0632 has 1 manufacturer part number on file: 801-6641060-372-4 (Naval Sea Systems Command).
Possible hazard — SDS may be required (DLA HMIC P). 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.