The Ring,wearing, cataloged under National Stock Number 4320-01-162-2653, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Aqua-Chem, Inc. Dba Aqua-Chem Inc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Ring,wearing |
| FSC / FSG | 4320 — Power and Hand Pumps (FSG 43) |
| Manufacturers | Aqua-Chem, Inc. Dba Aqua-Chem Inc (CAGE 0EXU3); Rps-Fl, Inc. Dba Rps Inc (CAGE 54402) |
| Parameter | Value |
|---|---|
| NSN | 4320-01-162-2653 |
| Primary Part Number | 066-07681-000 |
| Item Name | Ring,wearing |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Aqua-Chem, Inc. Dba Aqua-Chem Inc |
| Status | ACTIVE |
| 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 |
|---|---|
| 066-07681-000 PRIMARY | Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA) |
| L-2201 PRIMARY | Rps-Fl, Inc. Dba Rps Inc (USA) |
| Reference | Meaning |
|---|---|
| 066-7681-000 | 5/9 Secondary reference Aqua-Chem, Inc. |
| 66-7681 | 5/9 Secondary reference Aqua-Chem, Inc. |
| 066-07681-000 | 5/9 Secondary reference Aqua-Chem, Inc. |
| 66-A-7679 | 5/9 Secondary reference Aqua-Chem, Inc. |
NSN 4320-01-162-2653 is a Ring,wearing, manufactured by Aqua-Chem, Inc. Dba Aqua-Chem Inc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-162-2653 has 2 manufacturer part numbers on file: 066-07681-000 (Aqua-Chem, Inc. Dba Aqua-Chem Inc), L-2201 (Rps-Fl, Inc. Dba Rps 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.