The Gasket, cataloged under National Stock Number 5330-00-970-9481, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5330-00-970-9481 |
| Primary Part Number | 128EC11021-11 |
| Item Name | Gasket |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Cross-Sectional Thickness | 0.062 INCHES NOMINAL IN |
| Hardness Rating | 40.0 SHORE DUROMETER A NOMINAL OVERALL |
| Style Designator | CIRCULAR |
| Material Document and Classification | MIL-S-6855,CL 2,GR 40 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | SOLID SINGLE OR COMPOSITION |
| Outside Diameter | 4.500 INCHES NOMINAL IN |
| Aperture Diameter | 1.031 INCHES NOMINAL IN |
| Bolt Hole Quantity | 10 |
| Bolt Circle Diameter | 4.000 INCHES NOMINAL IN |
| Material | RUBBER CHLOROPRENE CLASS CR OVERALL |
| Hole Diameter | 0.188 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| 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 |
|---|---|
| 128EC11021-11 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 128EC11021-11 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
NSN 5330-00-970-9481 is a Gasket, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-970-9481 has 1 manufacturer part number on file: 128EC11021-11 (Northrop Grumman Systems Corporation).
Key specifications for 128EC11021-11: Cross-Sectional Thickness: 0.062 INCHES NOMINAL IN; Hardness Rating: 40.0 SHORE DUROMETER A NOMINAL OVERALL; Style Designator: CIRCULAR; Material Document and Classification: MIL-S-6855,CL 2,GR 40 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL. 11 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.