The Gasket, cataloged under National Stock Number 5330-01-021-5123, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Ernst, John C & Co, Inc.. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5330-01-021-5123 |
| Primary Part Number | E442-04SPPC8 |
| Item Name | Gasket |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Ernst, John C & Co, Inc. |
| Status | ACTIVE |
| Cross-Sectional Thickness | 0.375 INCHES NOMINAL IN |
| Style Designator | CIRCULAR |
| Cross-Sectional Shape Style | SOLID SINGLE OR COMPOSITION |
| Outside Diameter | 0.937 INCHES NOMINAL IN |
| Aperture Diameter | 0.719 INCHES NOMINAL IN |
| Material | RUBBER CHLOROPRENE CLASS CR 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 |
|---|---|
| E442-04SPPC8 PRIMARY | Ernst, John C & Co, Inc. (USA) |
| Reference | Meaning |
|---|---|
| E442-04SP PIECE | C/1 Advisory reference — outside the item-of-supply concept Ernst, John C & Co, Inc. |
NSN 5330-01-021-5123 is a Gasket, manufactured by Ernst, John C & Co, Inc., classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-021-5123 has 1 manufacturer part number on file: E442-04SPPC8 (Ernst, John C & Co, Inc.).
Key specifications for E442-04SPPC8: Cross-Sectional Thickness: 0.375 INCHES NOMINAL IN; Style Designator: CIRCULAR; Cross-Sectional Shape Style: SOLID SINGLE OR COMPOSITION; Outside Diameter: 0.937 INCHES NOMINAL IN. 6 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.