The Seal Special, cataloged under National Stock Number 5330-00-471-6501, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Mission Systems Wimborne Limited Div Cobham Mission Systems Wimborne Ltd. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Item Name | Seal Special |
| FSC / FSG | 5330 — Packing and Gasket Materials (FSG 53) |
| Manufacturers | Mission Systems Wimborne Limited Div Cobham Mission Systems Wimborne Ltd (CAGE U1918); The Boeing Company Div Defense (CAGE 76301); Eaton Limited (CAGE K2523) |
| Parameter | Value |
|---|---|
| NSN | 5330-00-471-6501 |
| Primary Part Number | HTE581-5A |
| Item Name | Seal Special |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Mission Systems Wimborne Limited Div Cobham Mission Systems Wimborne Ltd |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Part Number | Manufacturer |
|---|---|
| HTE581-5A PRIMARY | Mission Systems Wimborne Limited Div Cobham Mission Systems Wimborne Ltd (GBR) |
| 7M632-1 | The Boeing Company Div Defense (USA) |
| HTE581-5A | Eaton Limited (GBR) |
| Reference | Meaning |
|---|---|
| HTE581-5A | 5/9 Secondary reference High Temperature Engineers Ltd |
| 99-6038661 | 6/9 Informative reference only U.S. Government activity |
NSN 5330-00-471-6501 is a Seal Special, manufactured by Mission Systems Wimborne Limited Div Cobham Mission Systems Wimborne Ltd, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-471-6501 has 3 manufacturer part numbers on file: HTE581-5A (Mission Systems Wimborne Limited Div Cobham Mission Systems Wimborne Ltd), 7M632-1 (The Boeing Company Div Defense), HTE581-5A (Eaton Limited).
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.