The Seal,plain Encased, cataloged under National Stock Number 5330-00-678-1759, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 9 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 5330-00-678-1759 |
| Primary Part Number | 7996804 |
| Item Name | Seal,plain Encased |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Seal Width | 0.420 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN |
| Sealing Element Style | ANGULAR-OPPOSED |
| Housing Bore Diameter | 3.000 INCHES NOMINAL IN |
| Case Style | SQUARE |
| Accommodated Shaft Diameter | 2.250 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM CASE |
| Material | STEEL CASE |
| Material | RUBBER SYNTHETIC SEALING ELEMENT A |
| Material | RUBBER SYNTHETIC SEALING ELEMENT B |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 7996804 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 225-2996-15 | John Crane, Inc (USA) |
| Reference | Meaning |
|---|---|
| 24B-2742 | 5/2 Secondary reference U.S. Government activity |
| 516992 | 3/9 Design control — primary reference U.S. Government activity |
| 20322A | 5/9 Secondary reference U.S. Government activity |
| 5330006781759 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 5330-00-678-1759 is a Seal,plain Encased, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-678-1759 has 2 manufacturer part numbers on file: 7996804 (U S Army Tank Automotive Command Amsta-Im-Mm), 225-2996-15 (John Crane, Inc).
4 possible matches (shared part number, not a government interchangeability claim): 3020-00-796-7340, 5930-01-301-0883, 5930-01-560-3548. Verify interchangeability with system specifications before substitution.
Key specifications for 7996804: Seal Width: 0.420 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN; Sealing Element Style: ANGULAR-OPPOSED; Housing Bore Diameter: 3.000 INCHES NOMINAL IN; Case Style: SQUARE. 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.