# NSN 5330-01-717-6445: Back-Up Ring, Preformed Packing

NSN 5330-01-717-6445 (also written 5330017176445; NIIN 01-717-6445) is a back-up ring, preformed packing in Federal Supply Class 5330, Packing and Gasket Materials. 2 manufacturer part numbers from 2 suppliers are on record. No purchases are on record yet.

## Identification

- NSN: 5330-01-717-6445 (5330017176445)
- NIIN: 01-717-6445 (017176445)
- Item name: BACK-UP RING,PREFORMED PACKING
- Federal Supply Class: [FSC 5330 Packing and Gasket Materials](https://nsnexplorer.com/fsc/5330/)
- Federal Supply Group: [FSG 53](https://nsnexplorer.com/group/53/)
- Acquisition method suffix code: AMSC G: the government has a complete data package and the rights to use it. (observed 2026-10-23)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| PRPY | PROPRIETARY CHARACTERISTICS | PACS |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 221-8203084-31 | 53711 | NAVAL SEA SYSTEMS COMMAND | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| A1B PPPA SK-028 | 43689 | HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5330017176445&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5330017176445
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- All data is public U.S. government data; every row above links to its source record where one exists.

Canonical page: https://nsnexplorer.com/nsn/5330-01-717-6445/
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