The Packing,preformed, cataloged under National Stock Number 5330-01-491-2927, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Derco Aerospace, Inc. Dba Derco Aerospace, Inc. a Lockheed Martin Company. Government technical data includes 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5330-01-491-2927 |
| Primary Part Number | 1646811-3 |
| Item Name | Packing,preformed |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Derco Aerospace, Inc. Dba Derco Aerospace, Inc. a Lockheed Martin Company |
| Status | ACTIVE |
| Hardness Rating | 75.0 SHORE DUROMETER A NOMINAL OVERALL |
| Material | PLASTIC FLUOROCARBON OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 1646811-3 | Derco Aerospace, Inc. Dba Derco Aerospace, Inc. a Lockheed Martin Company (USA) |
| Reference | Meaning |
|---|---|
| 10366884 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 1646811-3 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5330-01-491-2927 is a Packing,preformed, manufactured by Derco Aerospace, Inc. Dba Derco Aerospace, Inc. a Lockheed Martin Company, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-491-2927 has 1 manufacturer part number on file: 1646811-3 (Derco Aerospace, Inc. Dba Derco Aerospace, Inc. a Lockheed Martin Company).
Key specifications for 1646811-3: Hardness Rating: 75.0 SHORE DUROMETER A NOMINAL OVERALL; Special Features: USED ON REGULATORS & CONCENTRATORS; Part Name Assigned by Controlling Agency: SEAT; End Item Identification: ALSS;AVIATION LIFE SUPPORT SYSTEMS. 2 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.