The Gasket,spiral Wound, cataloged under National Stock Number 5330-01-681-7638, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is William E Williams Valve Corp. Government technical data includes 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5330-01-681-7638 |
| Primary Part Number | 2.5 152F2N IT-5 |
| Item Name | Gasket,spiral Wound |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | William E Williams Valve Corp |
| Status | ACTIVE |
| Outside Diameter | 2.500 INCHES NOMINAL IN |
| Material | GRAPHITE SEALING ELEMENT |
| Material | STEEL COMP 304 INTERNALLY MOLDED-IN REINFORCEMENT |
| 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 |
|---|---|
| 2.5 152F2N IT-5 PRIMARY | William E Williams Valve Corp (USA) |
| Reference | Meaning |
|---|---|
| 60GL120084-28 | D/9 Drawing number reference only William E Williams Valve Corp |
| 60GL120084-28 ITEM 5 | 5/1 Secondary reference William E Williams Valve Corp |
NSN 5330-01-681-7638 is a Gasket,spiral Wound, manufactured by William E Williams Valve Corp, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-681-7638 has 1 manufacturer part number on file: 2.5 152F2N IT-5 (William E Williams Valve Corp).
Key specifications for 2.5 152F2N IT-5: Outside Diameter: 2.500 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: GASKET; End Item Identification: LLH0B2633; Material: GRAPHITE SEALING ELEMENT. 3 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.