The Seal Assembly,shaft,spring Loade, cataloged under National Stock Number 4320-01-128-4064, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Defense Maritime Solutions, Inc.. The record lists 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Seal Assembly,shaft,spring Loade |
| FSC / FSG | 4320 — Power and Hand Pumps (FSG 43) |
| Manufacturers | John Crane, Inc (CAGE 71724); Defense Maritime Solutions, Inc. (CAGE 0EYA6) |
| Parameter | Value |
|---|---|
| NSN | 4320-01-128-4064 |
| Primary Part Number | DSP-1639TY1BP1C1-1IN |
| Item Name | Seal Assembly,shaft,spring Loade |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Defense Maritime Solutions, Inc. |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| DSP-1639TY1BP1C1-1IN | John Crane, Inc (USA) |
| DSP-1639TY1BP1C1-1IN PRIMARY | Defense Maritime Solutions, Inc. (USA) |
| DSP-1639 | John Crane, Inc (USA) |
| Reference | Meaning |
|---|---|
| DSP-1639TY1BP1C1-1IN | 3/9 Design control — primary reference Wartsila Lips Inc |
NSN 4320-01-128-4064 is a Seal Assembly,shaft,spring Loade, manufactured by Defense Maritime Solutions, Inc., classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-128-4064 has 3 manufacturer part numbers on file: DSP-1639TY1BP1C1-1IN (John Crane, Inc), DSP-1639TY1BP1C1-1IN (Defense Maritime Solutions, Inc.), DSP-1639 (John Crane, Inc).
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.