The Seal,plain Encased, cataloged under National Stock Number 5330-01-478-4143, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Fleck Bearing Co. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-478-4143 |
| Primary Part Number | 471763 |
| Item Name | Seal,plain Encased |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Fleck Bearing Co |
| Status | ACTIVE |
| Seal Width | 0.250 INCHES NOMINAL IN |
| Housing Bore Diameter | 2.000 INCHES NOMINAL IN |
| Accommodated Shaft Diameter | 1.125 INCHES NOMINAL IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT |
| Material | STEEL CASE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 471763 PRIMARY | Fleck Bearing Co (USA) |
| Reference | Meaning |
|---|---|
| 40160S | 5/9 Secondary reference Fleck Bearing Co |
| 40160S | 5/9 Secondary reference National Seal Corp |
NSN 5330-01-478-4143 is a Seal,plain Encased, manufactured by Fleck Bearing Co, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-478-4143 has 1 manufacturer part number on file: 471763 (Fleck Bearing Co).
Key specifications for 471763: Seal Width: 0.250 INCHES NOMINAL IN; Housing Bore Diameter: 2.000 INCHES NOMINAL IN; Accommodated Shaft Diameter: 1.125 INCHES NOMINAL IN; End Item Identification: B-52 AIRCRAFT. 5 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.
NSN 5330-01-478-4143 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.