The O-Ring, cataloged under National Stock Number 5331-01-532-9187, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Steyr Motors Ag. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-532-9187 |
| Primary Part Number | 2178310/1 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Steyr Motors Ag |
| Status | ACTIVE |
| Cross-Sectional Height | 3.5 MILLIMETERS NOMINAL MM |
| Center Hole Diameter | 17.0 MILLIMETERS NOMINAL MM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 2178310/1 | Steyr Motors North America, Inc. (USA) |
| 125120 | Uro Vehiculos Especiales Sa (ESP) |
| 2 0163-099 | Bae Systems Hagglunds Aktiebolag (SWE) |
| 2178310/1 | Laborde Products, Llc Dba Star Power Services (USA) |
| 2178310/1 PRIMARY | Steyr Motors Ag (AUT) |
| 2178310/1 | Mcintyre Equipment Pty Ltd (AUS) |
| Reference | Meaning |
|---|---|
| 2178310/1 | 5/9 Secondary reference Steyr Motors Gmbh |
| 2178310/1 | 5/9 Secondary reference Steyr Motors Gmbh |
| 2178310/1 | 5/9 Secondary reference U.s. Defense Services, Inc. Dba Usds |
NSN 5331-01-532-9187 is a O-Ring, manufactured by Steyr Motors Ag, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-532-9187 has 6 manufacturer part numbers on file: 2178310/1 (Steyr Motors North America, Inc.), 125120 (Uro Vehiculos Especiales Sa), 2 0163-099 (Bae Systems Hagglunds Aktiebolag), 2178310/1 (Laborde Products, Llc Dba Star Power Services), 2178310/1 (Steyr Motors Ag) and 1 more.
1 possible match (shared part number, not a government interchangeability claim): 6685-01-665-7899. Verify interchangeability with system specifications before substitution.
Key specifications for 2178310/1: Cross-Sectional Height: 3.5 MILLIMETERS NOMINAL MM; Center Hole Diameter: 17.0 MILLIMETERS NOMINAL MM; End Item Identification: AIR FILTER,INVERSION VALVE FOR A 256 MARINE SOLAS. 2 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.
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.