# NSN 5331-01-508-9028: O-Ring

NSN 5331-01-508-9028 (also written 5331015089028; NIIN 01-508-9028) 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 Oct 2026.

## Identification

- NSN: 5331-01-508-9028 (5331015089028)
- NIIN: 01-508-9028 (015089028)
- 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 D: the data needed to compete the part is unavailable or cannot be obtained economically. (observed 2026-10-27)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| ADYT | CENTER HOLE DIAMETER | MILLIMETERS NOMINAL 75.790 |
| FEAT | SPECIAL FEATURES | 9T-8785 CYLINDER GROUP, ARTICULATION; PART OF 115-5726 CYLINDER & MTG GROUP S/N 3YK1-UP |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | SEAL-O-RING |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 175-7896 | 11083 | CATERPILLAR INC DIV CATERPILLAR DEFENSE | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-10-29 | [SPE7LX21D0087/SPE7LX27FA91U](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5331015089028) | O-RING | ATLANTIC DIVING SUPPLY, INC. DBA ADS | $4.56 |
| 2026-09-04 | [SPE7LX21D0087/SPE7LX26FB6FU](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5331015089028) | O-RING | ATLANTIC DIVING SUPPLY, INC. DBA ADS | $4.56 |
| 2026-09-04 | [SPE7LX21D0087/SPE7LX26FB6FQ](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5331015089028) | O-RING | ATLANTIC DIVING SUPPLY, INC. DBA ADS | $4.56 |
| 2026-08-14 | [SPE7LX21D0087/SPE7LX26FB6S5](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5331015089028) | O-RING | ATLANTIC DIVING SUPPLY, INC. DBA ADS | $4.71 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=5331015089028&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=5331015089028
- 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.

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