The Seal,plain, cataloged under National Stock Number 5330-01-391-1668, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Greene Tweed & Co Inc. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-391-1668 |
| Primary Part Number | 596-01601-409-190 |
| Item Name | Seal,plain |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Greene Tweed & Co Inc |
| Status | ACTIVE |
| Seal Width | 0.172 INCHES NOMINAL IN |
| Housing Bore Diameter | 0.749 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-R-25988 TYPE 2, CLASS 3, GRADE 75 MIL SPEC SINGLE MATERIAL RESPONSE SEALING ELEMENT |
| Accommodated Shaft Diameter | 0.638 INCHES MINIMUM AND 0.639 INCHES MAXIMUM IN |
| Material | RUBBER FLUOROSILICONE CLASS FQ SEALING ELEMENT |
| 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 |
|---|---|
| 596-01601-409-190 PRIMARY | Greene Tweed & Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 596-01601-409-190 | 5/9 Secondary reference Palmetto Inc |
| 6769053 | 7/2 Vendor item drawing reference Naval Sea Systems Command |
NSN 5330-01-391-1668 is a Seal,plain, manufactured by Greene Tweed & Co Inc, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-391-1668 has 1 manufacturer part number on file: 596-01601-409-190 (Greene Tweed & Co Inc).
Key specifications for 596-01601-409-190: Seal Width: 0.172 INCHES NOMINAL IN; Housing Bore Diameter: 0.749 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN; Material Document and Classification: MIL-R-25988 TYPE 2, CLASS 3, GRADE 75 MIL SPEC SINGLE MATERIAL RESPONSE SEALING ELEMENT; Accommodated Shaft Diameter: 0.638 INCHES MINIMUM AND 0.639 INCHES MAXIMUM IN. 5 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.