The Packing Assembly, cataloged under National Stock Number 5330-00-641-4443, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5330-00-641-4443 |
| Primary Part Number | 1572958 |
| Item Name | Packing Assembly |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Temp Rating | 300.0 FAHRENHEIT DEGF |
| Intermediate Ring Quantity | 4 |
| Outside Diameter | 5.625 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | U INTERMEDIATE RING |
| Inside Diameter | 4.750 INCHES NOMINAL IN |
| Height | 1.288 INCHES NOMINAL IN |
| Material | RUBBER SYNTHETIC BOTTOM RING |
| Material | RUBBER SYNTHETIC INTERMEDIATE RING |
| Material | RUBBER SYNTHETIC TOP RING |
| Joint Type | DOVETAIL BOTTOM RING |
| 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 |
|---|---|
| 1572958 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 578-2200-1572958REVAPC4 | 3/2 Design control — primary reference U.S. Government activity |
| 7862-02REVAPC4 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5330-00-641-4443 is a Packing Assembly, manufactured by Naval Sea Systems Command, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-641-4443 has 1 manufacturer part number on file: 1572958 (Naval Sea Systems Command).
Key specifications for 1572958: Temp Rating: 300.0 FAHRENHEIT DEGF; Intermediate Ring Quantity: 4; Outside Diameter: 5.625 INCHES NOMINAL IN; Cross-Sectional Shape Style: U INTERMEDIATE RING. 10 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.