The Retainer,packing, cataloged under National Stock Number 5330-00-140-2121, 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 6 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 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 | 5330-00-140-2121 |
| Primary Part Number | 331609 |
| 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 |
| Cross-Sectional Height | 0.426 INCHES NOMINAL IN |
| Body Recess Diameter | 1.603 INCHES MINIMUM AND 1.613 INCHES MAXIMUM IN |
| Flanged Body Outside Diameter | 1.810 INCHES NOMINAL IN |
| Peripheral Diameter | 2.095 INCHES MINIMUM AND 2.115 INCHES MAXIMUM IN |
| Center Hole Diameter | 1.370 INCHES MINIMUM AND 1.410 INCHES MAXIMUM IN |
| Material | GRAPHITE 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 |
|---|---|
| 331609 PRIMARY | Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA) |
NSN 5330-00-140-2121 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 5330-00-140-2121 has 1 manufacturer part number on file: 331609 (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer).
2 possible matches (shared part number, not a government interchangeability claim): 2915-01-159-6720, 4410-01-342-3193. Verify interchangeability with system specifications before substitution.
Key specifications for 331609: Cross-Sectional Height: 0.426 INCHES NOMINAL IN; Body Recess Diameter: 1.603 INCHES MINIMUM AND 1.613 INCHES MAXIMUM IN; Flanged Body Outside Diameter: 1.810 INCHES NOMINAL IN; Peripheral Diameter: 2.095 INCHES MINIMUM AND 2.115 INCHES MAXIMUM 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.