The Seal,plain, cataloged under National Stock Number 5330-01-224-9148, 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 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-224-9148 |
| Primary Part Number | 305-238 |
| 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 450.0 FAHRENHEIT DEGF |
| Seal Width | 0.161 INCHES MINIMUM AND 0.177 INCHES MAXIMUM IN |
| Housing Bore Diameter | 3.744 INCHES MINIMUM AND 3.756 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-W-423 FED SPEC SINGLE MATERIAL RESPONSE SPRING |
| Material Document and Classification | AMS-3651 ASSN STD SINGLE MATERIAL RESPONSE SEALING ELEMENT |
| Cross-Sectional Shape Style | C-SECTION W/ HELICAL SPRING |
| Accommodated Shaft Diameter | 3.500 INCHES NOMINAL IN |
| Material | STEEL COMP 302 SPRING |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE 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 |
|---|---|
| 305-238 PRIMARY | Bal Seal Engineering, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 7536591 PART 8 | 5/9 Secondary reference U.S. Government activity |
NSN 5330-01-224-9148 is a Seal,plain, manufactured by Bal Seal Engineering, Inc., classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-224-9148 has 1 manufacturer part number on file: 305-238 (Bal Seal Engineering, Inc.).
Key specifications for 305-238: Temp Rating: -70.0 FAHRENHEIT AND 450.0 FAHRENHEIT DEGF; Seal Width: 0.161 INCHES MINIMUM AND 0.177 INCHES MAXIMUM IN; Housing Bore Diameter: 3.744 INCHES MINIMUM AND 3.756 INCHES MAXIMUM IN; Material Document and Classification: QQ-W-423 FED SPEC SINGLE MATERIAL RESPONSE SPRING. 10 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.