The Seal,plain, cataloged under National Stock Number 5330-01-546-9544, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5330-01-546-9544 |
| Primary Part Number | HS4028A |
| Item Name | Seal,plain |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp |
| Status | ACTIVE |
| Material | RUBBER 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 |
|---|---|
| HS4028A | The Boeing Company (USA) |
| HS4028A PRIMARY | Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp (USA) |
| HS4028A | West American Rubber Company, Llc. Dba West American Rubber Co Llc (USA) |
| Reference | Meaning |
|---|---|
| HS4028A | 3/9 Design control — primary reference Rubbercraft Corporation of California, Ltd Dba Rubber Teck Division Use CAGE Code 77969 for Cataloging |
NSN 5330-01-546-9544 is a Seal,plain, manufactured by Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-546-9544 has 3 manufacturer part numbers on file: HS4028A (The Boeing Company), HS4028A (Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp), HS4028A (West American Rubber Company, Llc. Dba West American Rubber Co Llc).
Key specifications for HS4028A: Special Features: RUBBER SILICONE; Part Name Assigned by Controlling Agency: EXTRUSION; Material: RUBBER OVERALL. 1 specification is 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.