The Retainer,packing, cataloged under National Stock Number 5330-00-678-0290, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives. Government technical data includes 4 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 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 | 5330-00-678-0290 |
| Primary Part Number | 7298-21 |
| Item Name | Retainer,packing |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives |
| Status | ACTIVE |
| Cross-Sectional Height | 0.078 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | CUP |
| Peripheral Diameter | 0.250 INCHES NOMINAL IN |
| Material | COPPER ALLOY OVERALL |
| 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 |
|---|---|
| 7298-21 PRIMARY | Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives (USA) |
NSN 5330-00-678-0290 is a Retainer,packing, manufactured by Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-678-0290 has 1 manufacturer part number on file: 7298-21 (Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-253-9721. Verify interchangeability with system specifications before substitution.
Key specifications for 7298-21: Cross-Sectional Height: 0.078 INCHES NOMINAL IN; Cross-Sectional Shape Style: CUP; Peripheral Diameter: 0.250 INCHES NOMINAL IN; Material: COPPER ALLOY OVERALL. 4 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.