The Seal Fuel, cataloged under National Stock Number 5330-00-780-2159, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Eaton Corporation Dba Eaton Inoac Div Eaton. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-00-780-2159 |
| Primary Part Number | 40688 |
| Item Name | Seal Fuel |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Eaton Corporation Dba Eaton Inoac Div Eaton |
| Status | ACTIVE |
| General Characteristics Item Description | 0.460 IN. NOM ID,0.939 IN. NOM OD,0.492 IN. NOM W IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
NSN 5330-00-780-2159 is a Seal Fuel, manufactured by Eaton Corporation Dba Eaton Inoac Div Eaton, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-780-2159 has 2 manufacturer part numbers on file: 40688 (Eaton Corporation Dba Eaton Inoac Div Eaton), B40688 (Eaton Corporation Dba Eaton Inoac Div Eaton).
1 possible match (shared part number, not a government interchangeability claim): 7690-01-724-2059. Verify interchangeability with system specifications before substitution.
Key specifications for 40688: General Characteristics Item Description: 0.460 IN. NOM ID,0.939 IN. NOM OD,0.492 IN. NOM W IN. 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.