The Seal Assembly,shaft,spring Loade, cataloged under National Stock Number 4320-00-375-8922, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4320-00-375-8922 |
| Primary Part Number | 333102 |
| Item Name | Seal Assembly,shaft,spring Loade |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer |
| Status | ACTIVE |
| General Characteristics Item Description | CONSISTS OF A PLASTIC SEAL AND SEAL RETAINER ENCASED IN CRES WITH A SPRING LOADED PRESSURE PLATE WHICH SEALS AGAINST A CRES RING; 1.000 IN. ID,2.140 IN. MAJOR OD; FURNISHED W/COMPOSITION GASKET AND POLYTETRAFLUOROETHYLENE SEAL RETAINER IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| M01973 | John Crane, Inc (USA) |
| CFSP38138QP191 | Defense Maritime Solutions, Inc. (USA) |
| CFSP38138QP191 | John Crane, Inc (USA) |
| 333102 PRIMARY | Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA) |
| Reference | Meaning |
|---|---|
| CFSP38138QP191 | 5/9 Secondary reference Wartsila Lips Inc |
NSN 4320-00-375-8922 is a Seal Assembly,shaft,spring Loade, manufactured by Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-375-8922 has 4 manufacturer part numbers on file: M01973 (John Crane, Inc), CFSP38138QP191 (Defense Maritime Solutions, Inc.), CFSP38138QP191 (John Crane, Inc), 333102 (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer).
1 possible match (shared part number, not a government interchangeability claim): 5306-00-809-2815. Verify interchangeability with system specifications before substitution.
Key specifications for 333102: General Characteristics Item Description: CONSISTS OF A PLASTIC SEAL AND SEAL RETAINER ENCASED IN CRES WITH A SPRING LOADED PRESSURE PLATE WHICH SEALS AGAINST A CRES RING; 1.000 IN. ID,2.140 IN. MAJOR OD; FURNISHED W/COMPOSITION GASKET AND POLYTETRAFLUOROETHYLENE SEAL RETAINER IN. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.