The Retainer,packing, cataloged under National Stock Number 5330-01-320-7202, 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 12 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 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-320-7202 |
| Primary Part Number | 143019 |
| Item Name | Retainer,packing |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer |
| Status | ACTIVE |
| Attachment Hole Diameter | 0.344 INCHES NOMINAL IN |
| Attachment Feature Quantity | 4 |
| Cross-Sectional Thickness | 0.278 INCHES NOMINAL IN |
| Cross-Sectional Height | 0.847 INCHES NOMINAL IN |
| Material Document and Classification | ASTM A536 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Cross-Sectional Shape Style | FLANGE |
| Attachment Feature Circle Diameter | 3.062 INCHES NOMINAL SINGLE CIRCLE IN |
| Flanged Body Outside Diameter | 1.248 INCHES MINIMUM AND 1.249 INCHES MAXIMUM IN |
| Peripheral Diameter | 3.750 INCHES NOMINAL IN |
| Center Hole Diameter | 0.800 INCHES NOMINAL IN |
| Material | IRON CAST UNS F32800 OR IRON CAST UNS F33100 OR IRON CAST UNS F33800 OR IRON CAST UNS F34800 OR IRON CAST UNS F36200 OVERALL |
| Attachment Method | ROUND HOLE |
| 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 |
|---|---|
| 143019 PRIMARY | Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA) |
NSN 5330-01-320-7202 is a Retainer,packing, manufactured by Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-320-7202 has 1 manufacturer part number on file: 143019 (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer).
1 possible match (shared part number, not a government interchangeability claim): 6150-01-382-3890. Verify interchangeability with system specifications before substitution.
Key specifications for 143019: Attachment Hole Diameter: 0.344 INCHES NOMINAL IN; Attachment Feature Quantity: 4; Cross-Sectional Thickness: 0.278 INCHES NOMINAL IN; Cross-Sectional Height: 0.847 INCHES NOMINAL IN. 12 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.