The Retainer,packing, cataloged under National Stock Number 5330-01-472-7494, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Metrex Valve Corp. Dba Metrex Valve Corp. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-472-7494 |
| Primary Part Number | 45M-678 |
| Item Name | Retainer,packing |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Metrex Valve Corp. Dba Metrex Valve Corp |
| Status | ACTIVE |
| Cross-Sectional Height | 0.535 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | SPECIAL |
| Peripheral Diameter | 2.226 INCHES MINIMUM AND 2.230 INCHES MAXIMUM IN |
| Center Hole Diameter | 1.360 INCHES NOMINAL IN |
| Material | PLASTIC ACETAL 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 |
|---|---|
| 45M-678 PRIMARY | Metrex Valve Corp. Dba Metrex Valve Corp (USA) |
| Reference | Meaning |
|---|---|
| EAOCM-814NF2-3W ITEM 25 | 5/9 Secondary reference Metrex Valve Corp. Dba Metrex Valve Corp |
NSN 5330-01-472-7494 is a Retainer,packing, manufactured by Metrex Valve Corp. Dba Metrex Valve Corp, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-472-7494 has 1 manufacturer part number on file: 45M-678 (Metrex Valve Corp. Dba Metrex Valve Corp).
Key specifications for 45M-678: Cross-Sectional Height: 0.535 INCHES NOMINAL IN; Cross-Sectional Shape Style: SPECIAL; Peripheral Diameter: 2.226 INCHES MINIMUM AND 2.230 INCHES MAXIMUM IN; Special Features: GOES TO AN 8" ROTARY VALVE. 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.