# NSN 3655-00-063-3214: Seat, Liquid Oxygen Coupling

NSN 3655-00-063-3214 (also written 3655000633214; NIIN 00-063-3214) is a seat, liquid oxygen coupling in Federal Supply Class 3655, Gas Generating and Dispensing Systems, Fixed or Mobile. 6 manufacturer part numbers from 5 suppliers are on record. It was last purchased in Aug 2026.

## Identification

- NSN: 3655-00-063-3214 (3655000633214)
- NIIN: 00-063-3214 (000633214)
- Item name: SEAT,LIQUID OXYGEN COUPLING
- Federal Supply Class: [FSC 3655 Gas Generating and Dispensing Systems, Fixed or Mobile](https://nsnexplorer.com/fsc/3655/)
- Federal Supply Group: [FSG 36](https://nsnexplorer.com/group/36/)
- Acquisition method suffix code: AMSC G: the government has a complete data package and the rights to use it. (observed 2026-10-10)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| TEXT | GENERAL CHARACTERISTICS ITEM DESCRIPTION | CAST ALUMINUM; 1.000 IN. SIZE |
| AGAV | END ITEM IDENTIFICATION | O2-N2 GENERATING,STORAGE AND TRANSFER EQUIPMENT |
| ZZZY | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | CLEANED AND PACKAGED PER MIL-P-52211/CE/ |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 121A3-1-4 | 96101 | GAS EQUIPMENT ENGINEERING CORPORATION, THE DBA GEECO | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 2900435-1 | 11243 | COSMODYNE, LLC DBA NIKKISO COSMODYNE DIV PROCESS SYSTEMS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 550043-10-206 | 00255 | FUTURECRAFT CORP SUB OF SOUTH BEND CONTROLS INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 8987855 | 18876 | US ARMY AVIATION AND MISSILE COMMAND | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 9-771-83-0001 | 00742 | AIR PRODUCTS AND CHEMICALS, INC DBA AIR PRODUCTS AND CHEMICALS INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| C8987855 | 00742 | AIR PRODUCTS AND CHEMICALS, INC DBA AIR PRODUCTS AND CHEMICALS INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Price history

Newest first.

| Date | Unit price | Quantity | Supplier | Agency | Source |
| --- | --- | --- | --- | --- | --- |
| 2026-08-26 | $65.00 | 50 | KROBACH MFG. CORP. DBA KROBACH MANUFACTURING CORP | — | [record](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=3655000633214) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-08-26 | [SPE4A726PF846](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=3655000633214) | SEAT, LIQUID OXYGEN | KROBACH MFG. CORP. DBA KROBACH MANUFACTURING CORP | $3,250.00 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=3655000633214&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=3655000633214
- 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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