The O-Ring, cataloged under National Stock Number 5331-00-420-1972, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Propulsion Systems, Inc.. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-420-1972 |
| Primary Part Number | 15408A PC 49 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Propulsion Systems, Inc. |
| Status | ACTIVE |
| Cross-Sectional Height | 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN |
| Center Hole Diameter | 4.966 INCHES MINIMUM AND 5.012 INCHES MAXIMUM IN |
| Material | RUBBER SYNTHETIC |
| 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 |
|---|---|
| 15408A PC 49 PRIMARY | Propulsion Systems, Inc. (USA) |
| Reference | Meaning |
|---|---|
| R149 | 5/9 Secondary reference Propulsion Systems, Inc. |
NSN 5331-00-420-1972 is a O-Ring, manufactured by Propulsion Systems, Inc., classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-420-1972 has 1 manufacturer part number on file: 15408A PC 49 (Propulsion Systems, Inc.).
Key specifications for 15408A PC 49: Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN; Center Hole Diameter: 4.966 INCHES MINIMUM AND 5.012 INCHES MAXIMUM IN; Material: RUBBER SYNTHETIC. 3 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.