The Back-Up Ring,preformed Packing, cataloged under National Stock Number 5330-01-722-5904, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Sae International Dba Sae International. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | Back-Up Ring,preformed Packing |
| FSC / FSG | 5330 — Packing and Gasket Materials (FSG 53) |
| Manufacturers | Sae International Dba Sae International (CAGE 0U583); Naval Sea Systems Command (CAGE 53711) |
| Parameter | Value |
|---|---|
| NSN | 5330-01-722-5904 |
| Primary Part Number | AS5781R09-333 |
| Item Name | Back-Up Ring,preformed Packing |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Sae International Dba Sae International |
| 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 |
|---|---|
| AS5781R09-333 PRIMARY | Sae International Dba Sae International (USA) |
| 563-8841614-595 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| AS5781R09-333 | 5/9 Secondary reference U.S. Government activity |
| LSA001764-595 | 5/2 Secondary reference U.S. Government activity |
| R5520405-595 | 5/2 Secondary reference U.S. Government activity |
NSN 5330-01-722-5904 is a Back-Up Ring,preformed Packing, manufactured by Sae International Dba Sae International, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-722-5904 has 2 manufacturer part numbers on file: AS5781R09-333 (Sae International Dba Sae International), 563-8841614-595 (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.