The Gasket, cataloged under National Stock Number 5330-01-476-7953, 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 6 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 5330-01-476-7953 |
| Primary Part Number | 8625MOD NO 13 |
| Item Name | Gasket |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | William E Williams Valve Corp |
| Status | ACTIVE |
| Cross-Sectional Thickness | 0.063 INCHES NOMINAL IN |
| Style Designator | CIRCULAR |
| Cross-Sectional Shape Style | SOLID SINGLE OR COMPOSITION |
| Outside Diameter | 10.500 INCHES NOMINAL IN |
| Aperture Diameter | 9.250 INCHES NOMINAL IN |
| Material | PLASTIC TETRAFLUOROETHYLENE OVERALL |
| 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 |
|---|---|
| 8625MOD-13 | William E Williams Valve Corp (USA) |
| 8625MOD NO 13 PRIMARY | William E Williams Valve Corp (USA) |
| Reference | Meaning |
|---|---|
| 8625MOD | D/9 Drawing number reference only William E Williams Valve Corp |
NSN 5330-01-476-7953 is a Gasket, manufactured by William E Williams Valve Corp, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-476-7953 has 2 manufacturer part numbers on file: 8625MOD-13 (William E Williams Valve Corp), 8625MOD NO 13 (William E Williams Valve Corp).
3 possible matches (shared part number, not a government interchangeability claim): 5330-01-476-7957, 4820-01-476-8060, 5310-01-478-2751. Verify interchangeability with system specifications before substitution.
Key specifications for 8625MOD NO 13: Cross-Sectional Thickness: 0.063 INCHES NOMINAL IN; Style Designator: CIRCULAR; Cross-Sectional Shape Style: SOLID SINGLE OR COMPOSITION; Outside Diameter: 10.500 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.