The Ring,wearing, cataloged under National Stock Number 4320-01-360-2389, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Buffaloes Fire Pump Inc. Dba R B Pump Co. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Ring,wearing |
| FSC / FSG | 4320 — Power and Hand Pumps (FSG 43) |
| Manufacturers | Buffaloes Fire Pump Inc. Dba R B Pump Co (CAGE 62503) |
| Parameter | Value |
|---|---|
| NSN | 4320-01-360-2389 |
| Primary Part Number | D-4037-25-1011 |
| Item Name | Ring,wearing |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Buffaloes Fire Pump Inc. Dba R B Pump Co |
| 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 |
|---|---|
| D-4037-C S.NO.25 | Buffaloes Fire Pump Inc. Dba R B Pump Co (USA) |
| D-4037-B S.NO.25 | Buffaloes Fire Pump Inc. Dba R B Pump Co (USA) |
| D-4037-25-1011 PRIMARY | Buffaloes Fire Pump Inc. Dba R B Pump Co (USA) |
| Reference | Meaning |
|---|---|
| D-4037-C | D/9 Drawing number reference only Buffaloes Fire Pump Inc. Dba R B Pump Co |
NSN 4320-01-360-2389 is a Ring,wearing, manufactured by Buffaloes Fire Pump Inc. Dba R B Pump Co, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-360-2389 has 3 manufacturer part numbers on file: D-4037-C S.NO.25 (Buffaloes Fire Pump Inc. Dba R B Pump Co), D-4037-B S.NO.25 (Buffaloes Fire Pump Inc. Dba R B Pump Co), D-4037-25-1011 (Buffaloes Fire Pump Inc. Dba R B Pump Co).
2 possible matches (shared part number, not a government interchangeability claim): 4320-01-360-4421, 4320-01-361-8091. Verify interchangeability with system specifications before substitution.
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.