The Seal,plain Encased, cataloged under National Stock Number 5330-00-579-7666, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5330-00-579-7666 |
| Item Name | Seal,plain Encased |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Status | ACTIVE |
| Seal Width | 0.750 INCHES NOMINAL IN |
| Sealing Element Style | ANGULAR |
| Housing Bore Diameter | 15.438 INCHES NOMINAL IN |
| Case Style | SQUARE |
| Accommodated Shaft Diameter | 13.938 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM AND CHROMATE CASE |
| Material | STEEL CASE |
| Material | RUBBER SYNTHETIC SEALING ELEMENT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 00044 | 3/1 Design control — primary reference Defense Logistics Agency Dba Defense Supply Center Philadelphia |
| 493750-361 | 5/9 Secondary reference L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc. |
| 505912 | 5/9 Secondary reference U.S. Government activity |
| 1394250 | 5/9 Secondary reference U.S. Government activity |
| 1544HMS1330 | 5/9 Secondary reference U.S. Government activity |
NSN 5330-00-579-7666 is a Seal,plain Encased, classified under FSC 5330, Packing and Gasket Materials. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 2540-01-207-7063. Verify interchangeability with system specifications before substitution.
Key specifications for 5330-00-579-7666: Seal Width: 0.750 INCHES NOMINAL IN; Sealing Element Style: ANGULAR; Housing Bore Diameter: 15.438 INCHES NOMINAL IN; Case Style: SQUARE. 8 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.