The Packing with Retainer, cataloged under National Stock Number 5330-01-524-4453, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer. Government technical data includes 9 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-524-4453 |
| Primary Part Number | 703203 |
| Item Name | Packing with Retainer |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer |
| Status | ACTIVE |
| Retainer Inside Diameter | 0.687 INCHES NOMINAL IN |
| Packing Inside Diameter | 0.550 INCHES NOMINAL IN |
| Outside Diameter | 1.062 INCHES NOMINAL IN |
| Packing Ring Cross-Sectional Diameter | 0.070 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | SPECIAL |
| Retainer Thickness | 0.050 INCHES NOMINAL IN |
| Material | STEEL OUTER RING |
| Material | RUBBER SYNTHETIC INNER RING |
| Construction | TWO-PIECE |
| 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 |
|---|---|
| E-4723 IT 73A | Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA) |
| 703203 PRIMARY | Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA) |
NSN 5330-01-524-4453 is a Packing with Retainer, manufactured by Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-524-4453 has 2 manufacturer part numbers on file: E-4723 IT 73A (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer), 703203 (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer).
Key specifications for 703203: Retainer Inside Diameter: 0.687 INCHES NOMINAL IN; Packing Inside Diameter: 0.550 INCHES NOMINAL IN; Outside Diameter: 1.062 INCHES NOMINAL IN; Packing Ring Cross-Sectional Diameter: 0.070 INCHES NOMINAL IN. 9 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.