The Seal,plain Encased, cataloged under National Stock Number 5330-00-475-2578, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-00-475-2578 |
| Item Name | Seal,plain Encased |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Status | ACTIVE |
| Temp Rating | -65.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF |
| Seal Width | 0.620 INCHES NOMINAL IN |
| Sealing Element Style | ANGULAR |
| Housing Bore Diameter | 7.506 INCHES MINIMUM AND 7.511 INCHES MAXIMUM IN |
| Accommodated Shaft Maximum Rated Speed | 489 FEET PER MINUTE FT |
| Case Style | SQUARE |
| Accommodated Shaft Diameter | 6.500 INCHES NOMINAL IN |
| Surface Treatment | ANODIZE CASE |
| Material | ALUMINUM ALLOY CASE |
| 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 |
|---|---|
| 114DS347-2 | 7/2 Vendor item drawing reference The Boeing Company |
| 510323 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5330-00-475-2578 is a Seal,plain Encased, classified under FSC 5330, Packing and Gasket Materials. Status: active.
4 possible matches (shared part number, not a government interchangeability claim): 5360-00-763-0493, 1440-01-081-1840, 5950-01-278-3062. Verify interchangeability with system specifications before substitution.
Key specifications for 5330-00-475-2578: Temp Rating: -65.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF; Seal Width: 0.620 INCHES NOMINAL IN; Sealing Element Style: ANGULAR; Housing Bore Diameter: 7.506 INCHES MINIMUM AND 7.511 INCHES MAXIMUM IN. 9 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.