The O-Ring, cataloged under National Stock Number 5331-01-075-2185, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Emerson Automation Solutions Final Control Us Lp Div Navy Product Team. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 17 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5331-01-075-2185 |
| Primary Part Number | NS3205PIECE13 61N |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team |
| Status | CANCELLED |
| Temp Rating | -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Outside Diameter | 8.262 INCHES NOMINAL IN |
| Elongation Percentage | 160 MAXIMUM |
| Center Hole Diameter | 7.954 INCHES MINIMUM AND 8.014 INCHES MAXIMUM IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| EAOCD-822NF-3WITEM12 | Metrex Valve Corp. Dba Metrex Valve Corp (USA) |
| NS3205PIECE13 61N PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| NS3981FIND12 PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| 5330002049 | General Dynamics European Land Systems - Santa Barbara Sistemas Sa (ESP) |
| 16-313 | Metrex Valve Corp. Dba Metrex Valve Corp (USA) |
| MS28775-266 PRIMARY | Sae International Dba Sae International (USA) |
| NS3981PIECE12 6IN PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| Reference | Meaning |
|---|---|
| 5331010752185 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 5331PL0888347 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| AS568-266MILP25732 | 5/9 Secondary reference Sae International Dba Sae International |
| SAE-AS28775 | 3/1 Design control — primary reference Sae International Dba Sae International |
| MS28775-266 | 5/9 Secondary reference U.S. Government activity |
| 10-1850-500 ITEM 33 | C/1 Advisory reference — outside the item-of-supply concept L3 Technologies, Inc. |
| 9320.551.8 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 845-2181251PIECE12 | 5/2 Secondary reference U.S. Government activity |
| AS568-266MILP25 732 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| MS28775-266 | 5/9 Secondary reference U.S. Government activity |
| AS568-266MILP25732 | 5/9 Secondary reference U.S. Government activity |
| 10374780 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| MS28775-266ES | 5/9 Secondary reference Eriks B.v. |
| NS3981PIECE12 6IN | 5/9 Secondary reference National Oilwell |
| NS3981FIND12 | 5/9 Secondary reference National Oilwell |
| AN6230B44 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| NS3205PIECE13 61N | 5/9 Secondary reference National Oilwell |
NSN 5331-01-075-2185 is a O-Ring, manufactured by Emerson Automation Solutions Final Control Us Lp Div Navy Product Team, classified under FSC 5331, O-ring. Status: cancelled.
NSN 5331-01-075-2185 has 7 manufacturer part numbers on file: EAOCD-822NF-3WITEM12 (Metrex Valve Corp. Dba Metrex Valve Corp), NS3205PIECE13 61N (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), NS3981FIND12 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), 5330002049 (General Dynamics European Land Systems - Santa Barbara Sistemas Sa), 16-313 (Metrex Valve Corp. Dba Metrex Valve Corp) and 2 more.
5 possible matches (shared part number, not a government interchangeability claim): 5355-01-111-0689, 5120-01-197-0236, 5305-01-291-9068. Verify interchangeability with system specifications before substitution.
Key specifications for NS3205PIECE13 61N: Temp Rating: -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF; Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Outside Diameter: 8.262 INCHES NOMINAL IN; Elongation Percentage: 160 MAXIMUM. 6 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 5331-01-075-2185 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
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.