The Gasket, cataloged under National Stock Number 5330-01-040-8908, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is William Powell Company, the Dba Powell Valve Div the Starflo Corporation. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-040-8908 |
| Primary Part Number | 39761 PART 51871 |
| Item Name | Gasket |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | William Powell Company, the Dba Powell Valve Div the Starflo Corporation |
| Status | ACTIVE |
| Cross-Sectional Thickness | 0.062 INCHES NOMINAL IN |
| Gasket Center to Flat Distance | 3.250 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | SOLID SINGLE OR COMPOSITION |
| Outside Diameter | 6.625 INCHES NOMINAL IN |
| Aperture Diameter | 3.562 INCHES NOMINAL IN |
| Gasket Center to Second Flat Distance | 3.250 INCHES NOMINAL IN |
| 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 |
|---|---|
| 39761 PART 51871 PRIMARY | William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA) |
| Reference | Meaning |
|---|---|
| 51871 | 5/9 Secondary reference William Powell Company, the Dba Powell Valve Div the Starflo Corporation |
NSN 5330-01-040-8908 is a Gasket, manufactured by William Powell Company, the Dba Powell Valve Div the Starflo Corporation, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-040-8908 has 1 manufacturer part number on file: 39761 PART 51871 (William Powell Company, the Dba Powell Valve Div the Starflo Corporation).
2 possible matches (shared part number, not a government interchangeability claim): 5365-01-436-3362, 8345-01-590-2390. Verify interchangeability with system specifications before substitution.
Key specifications for 39761 PART 51871: Cross-Sectional Thickness: 0.062 INCHES NOMINAL IN; Gasket Center to Flat Distance: 3.250 INCHES NOMINAL IN; Cross-Sectional Shape Style: SOLID SINGLE OR COMPOSITION; Outside Diameter: 6.625 INCHES NOMINAL IN. 6 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.