# NSN 5331-01-668-5581: O-Ring

NSN 5331-01-668-5581 (also written 5331016685581; NIIN 01-668-5581) is an o-ring in Federal Supply Class 5331, O-Rings. 1 manufacturer part number from 1 supplier is on record. It was last purchased in Aug 2026.

## Identification

- NSN: 5331-01-668-5581 (5331016685581)
- NIIN: 01-668-5581 (016685581)
- Item name: O-RING
- Federal Supply Class: [FSC 5331 O-Rings](https://nsnexplorer.com/fsc/5331/)
- 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 2026-11-02)
- Acquisition method code: 2

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| ADVN | CROSS-SECTIONAL HEIGHT | INCHES NOMINAL 0.210 |
| AGAV | END ITEM IDENTIFICATION | KC-46 AIRCRAFT |
| ABHE | OUTSIDE DIAMETER | INCHES NOMINAL 3.895 |
| MATT | MATERIAL | RUBBER FLUOROSILICONE CLASS FQ |
| FEAT | SPECIAL FEATURES | ITEM IS FAA CERTIFIED |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | RUBBER, FLUOROSILICONE ELASTOMER, OIL AND FUEL-RESISTANT, O-RINGS, CLASS 3 |
| ADYT | CENTER HOLE DIAMETER | INCHES NOMINAL 3.475 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| M25988-2-341 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-08-20 | [SPE7L526P2464](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5331016685581) | O-RING | HC MERCHANDISERS, INC. DBA HC MERCHANDISERS INC DIV HC PACIFIC | $198.36 |
| 2026-08-13 | [SPE7L126V166V](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5331016685581) | O-RING | BLADE INDUSTRIAL PRODUCTS INC | $1,396.85 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5331016685581&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5331016685581
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- USAspending contract actions (each award above links to its record)
- 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/5331-01-668-5581/
JSON: https://nsnexplorer.com/api/nsn/5331-01-668-5581.json