The Seal,plain, cataloged under National Stock Number 5330-01-271-5776, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Lake Shore Systems, Inc.. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5330-01-271-5776 |
| Primary Part Number | 2D3-978 ITEM 78 |
| Item Name | Seal,plain |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Lake Shore Systems, Inc. |
| Status | ACTIVE |
| Seal Width | 0.625 INCHES NOMINAL IN |
| Housing Bore Diameter | 13.750 INCHES NOMINAL IN |
| Material Document and Classification | H1 CAGEC 75165 MFR REF ALL MATERIAL RESPONSES HEEL |
| Material Document and Classification | L5 CAGEC 75165 MFR REF SINGLE MATERIAL RESPONSE SEALING ELEMENT |
| Cross-Sectional Shape Style | SINGLE LIP |
| Accommodated Shaft Diameter | 12.250 INCHES NOMINAL IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT |
| Material | ASBESTOS AND RUBBER SYNTHETIC HEEL |
| Construction | SOLID |
| 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 |
|---|---|
| 2D3-978 ITEM 78 PRIMARY | Lake Shore Systems, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 11318 LPD | 5/9 Secondary reference Johns Manville Intl |
NSN 5330-01-271-5776 is a Seal,plain, manufactured by Lake Shore Systems, Inc., classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-271-5776 has 1 manufacturer part number on file: 2D3-978 ITEM 78 (Lake Shore Systems, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5330-01-280-6419. Verify interchangeability with system specifications before substitution.
Key specifications for 2D3-978 ITEM 78: Seal Width: 0.625 INCHES NOMINAL IN; Housing Bore Diameter: 13.750 INCHES NOMINAL IN; Material Document and Classification: H1 CAGEC 75165 MFR REF ALL MATERIAL RESPONSES HEEL; Material Document and Classification: L5 CAGEC 75165 MFR REF SINGLE MATERIAL RESPONSE SEALING ELEMENT. 9 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.