The Packing Material, cataloged under National Stock Number 5330-00-641-1639, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Clayton Manufacturing Company. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-00-641-1639 |
| Primary Part Number | 21671 |
| Item Name | Packing Material |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Clayton Manufacturing Company |
| Status | ACTIVE |
| Length | 4.000 INCHES NOMINAL IN |
| Cross-Sectional Height | 0.375 INCHES NOMINAL IN |
| Cross-Sectional Width | 0.312 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Material | ASBESTOS |
| Fabrication Method | BRAIDED |
| 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 |
|---|---|
| 9-22032 | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| 21671 PRIMARY | Clayton Manufacturing Company (USA) |
| Reference | Meaning |
|---|---|
| GLN15194-516-2 | 5/9 Secondary reference Testek Llc Dba Testek Solutions |
| 22032 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| GLN15182-522-1 | 5/9 Secondary reference Testek Llc Dba Testek Solutions |
| 22032 | 5/9 Secondary reference U.S. Government activity |
| 9-22032 | 5/9 Secondary reference U.S. Government activity |
| 22032 | 5/9 Secondary reference U.S. Government activity |
| 22032 | 5/9 Secondary reference U.S. Government activity |
| BCA012 | 5/9 Secondary reference U.S. Government activity |
NSN 5330-00-641-1639 is a Packing Material, manufactured by Clayton Manufacturing Company, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-641-1639 has 2 manufacturer part numbers on file: 9-22032 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), 21671 (Clayton Manufacturing Company).
7 possible matches (shared part number, not a government interchangeability claim): 5330-00-851-7240, 5940-00-879-3107, 4320-00-922-0201. Verify interchangeability with system specifications before substitution.
Key specifications for 21671: Length: 4.000 INCHES NOMINAL IN; Cross-Sectional Height: 0.375 INCHES NOMINAL IN; Cross-Sectional Width: 0.312 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR. 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.