The Seal,plain, cataloged under National Stock Number 5330-01-004-6970, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Bal Seal Engineering, Inc.. Government technical data includes 9 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5330-01-004-6970 |
| Primary Part Number | X580557 |
| Item Name | Seal,plain |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Bal Seal Engineering, Inc. |
| Status | ACTIVE |
| Temp Rating | -70.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF |
| Seal Width | 0.170 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN |
| Housing Bore Diameter | 1.250 INCHES NOMINAL IN |
| Material Document and Classification | QQ-W-423,COMP 302,COND B FED SPEC SINGLE MATERIAL RESPONSE SPRING |
| Cross-Sectional Shape Style | C-SECTION W/ HELICAL SPRING |
| Accommodated Shaft Diameter | 1.000 INCHES NOMINAL IN |
| Material | STEEL COMP 302 SPRING |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE AND GRAPHITE SEALING ELEMENT |
| Construction | SOLID |
| 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 |
|---|---|
| X580557 PRIMARY | Bal Seal Engineering, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 305-214G | 5/9 Secondary reference Bal Seal Engineering, Inc. |
| 2731877PC4 | 5/2 Secondary reference U.S. Government activity |
NSN 5330-01-004-6970 is a Seal,plain, manufactured by Bal Seal Engineering, Inc., classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-004-6970 has 1 manufacturer part number on file: X580557 (Bal Seal Engineering, Inc.).
Key specifications for X580557: Temp Rating: -70.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF; Seal Width: 0.170 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN; Housing Bore Diameter: 1.250 INCHES NOMINAL IN; Material Document and Classification: QQ-W-423,COMP 302,COND B FED SPEC SINGLE MATERIAL RESPONSE SPRING. 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.