The Seal,plain Encased, cataloged under National Stock Number 5330-01-491-8802, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Perkins Engines Inc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-491-8802 |
| Primary Part Number | 3681A049 |
| Item Name | Seal,plain Encased |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Perkins Engines Inc |
| Status | ACTIVE |
| Seal Width | 132.2 MILLIMETERS MINIMUM AND 133.8 MILLIMETERS MAXIMUM MM |
| 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 |
|---|---|
| 3681A049 PRIMARY | Perkins Engines Inc (USA) |
| Reference | Meaning |
|---|---|
| 3681A049 | 5/9 Secondary reference GB Sales and Service |
| 3688X012 | 5/9 Secondary reference Power Great Lakes, Inc. |
| 3688X012 | 5/9 Secondary reference Perkins Engines Inc |
NSN 5330-01-491-8802 is a Seal,plain Encased, manufactured by Perkins Engines Inc, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-491-8802 has 1 manufacturer part number on file: 3681A049 (Perkins Engines Inc).
Key specifications for 3681A049: Seal Width: 132.2 MILLIMETERS MINIMUM AND 133.8 MILLIMETERS MAXIMUM MM; Special Features: 476.3 MM LONG MM; Part Name Assigned by Controlling Agency: JOINT CYLINDER HEAD COVER. 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.