The Seal Assembly,shaft,spring Loade, cataloged under National Stock Number 4320-01-278-2188, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is John Crane, Inc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-278-2188 |
| Primary Part Number | FSD-2090-1.125 |
| Item Name | Seal Assembly,shaft,spring Loade |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | John Crane, Inc |
| Status | ACTIVE |
| General Characteristics Item Description | ACCOMODATES 1.125 IN. SHAFT,MATERIAL J.CRANE 0SUB28FSUB30MDM 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 |
|---|---|
| 712-0304-693 | Carver Pump Company (USA) |
| FSD-2090-1.125 PRIMARY | John Crane, Inc (USA) |
| Reference | Meaning |
|---|---|
| F-SD-2014 FIGURE 8 TYPE 1 | 5/9 Secondary reference John Crane, Inc |
| 712-0304-693 | 5/9 Secondary reference Aurora Pump a Unit of General Signal Corp |
| F-SD-2014FIG8TY11.125INXF91MO15M | 5/9 Secondary reference John Crane, Inc |
NSN 4320-01-278-2188 is a Seal Assembly,shaft,spring Loade, manufactured by John Crane, Inc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-278-2188 has 2 manufacturer part numbers on file: 712-0304-693 (Carver Pump Company), FSD-2090-1.125 (John Crane, Inc).
Key specifications for FSD-2090-1.125: General Characteristics Item Description: ACCOMODATES 1.125 IN. SHAFT,MATERIAL J.CRANE 0SUB28FSUB30MDM 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.