The Ring,wearing, cataloged under National Stock Number 4320-01-241-2964, 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. Government technical data includes 2 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-241-2964 |
| Primary Part Number | 66-8040 |
| Item Name | Ring,wearing |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Aqua-Chem, Inc. Dba Aqua-Chem Inc |
| Status | ACTIVE |
| Body Inside Diameter | 5.265 INCHES NOMINAL IN |
| Material | NICKEL ALLOY AND COPPER ALLOY |
| 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 |
|---|---|
| 66-8040 PRIMARY | Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA) |
| Reference | Meaning |
|---|---|
| 066-08039-000-U.S. | 5/9 Secondary reference Aqua-Chem, Inc. |
| 66-8039 | 5/9 Secondary reference Aqua-Chem, Inc. |
| 66-8040 | 3/9 Design control — primary reference Aqua-Chem, Inc. |
| 66-8039-U.S. | 5/9 Secondary reference Aqua-Chem, Inc. |
| 066-08039-000 | 5/9 Secondary reference Aqua-Chem, Inc. |
NSN 4320-01-241-2964 is a Ring,wearing, manufactured by Aqua-Chem, Inc. Dba Aqua-Chem Inc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-241-2964 has 1 manufacturer part number on file: 66-8040 (Aqua-Chem, Inc. Dba Aqua-Chem Inc).
Key specifications for 66-8040: Body Inside Diameter: 5.265 INCHES NOMINAL IN; End Item Identification: AQUA-CHEM INC MODEL 2 1/2X4X11 CNB PUMP; Material: NICKEL ALLOY AND COPPER ALLOY. 2 specifications are 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.