The O-Ring, cataloged under National Stock Number 5331-00-366-3530, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-366-3530 |
| Primary Part Number | 8143446 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc |
| Status | ACTIVE |
| Cross-Sectional Height | 0.210 INCHES NOMINAL IN |
| Material | RUBBER |
| 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 |
|---|---|
| 8143446 PRIMARY | Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc (USA) |
| 8143446 | Engine Systems, Inc. Dba Marine Systems Div Marine Systems, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 8143446 | 3/9 Design control — primary reference General Motors Corp Electro-Motive Div |
| 8143446 | 5/9 Secondary reference General Motors Corp |
NSN 5331-00-366-3530 is a O-Ring, manufactured by Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-366-3530 has 2 manufacturer part numbers on file: 8143446 (Progress Rail Locomotive Inc. Dba Progress Rail Switching Services Llc), 8143446 (Engine Systems, Inc. Dba Marine Systems Div Marine Systems, Inc.).
Key specifications for 8143446: Cross-Sectional Height: 0.210 INCHES NOMINAL IN; Material: RUBBER. 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.