The Ring,wearing, cataloged under National Stock Number 4320-01-543-0803, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Circor Naval Solutions Llc Dba Warren Pumps. The record lists 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-543-0803 |
| Primary Part Number | N-15934 |
| Item Name | Ring,wearing |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Circor Naval Solutions Llc Dba Warren Pumps |
| 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 |
|---|---|
| N-15934 PRIMARY | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| PL-999F0929 FIND NO 97 | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| Reference | Meaning |
|---|---|
| 999F0929 | D/9 Drawing number reference only Circor Naval Solutions Llc Dba Warren Pumps |
NSN 4320-01-543-0803 is a Ring,wearing, manufactured by Circor Naval Solutions Llc Dba Warren Pumps, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-543-0803 has 2 manufacturer part numbers on file: N-15934 (Circor Naval Solutions Llc Dba Warren Pumps), PL-999F0929 FIND NO 97 (Circor Naval Solutions Llc Dba Warren Pumps).
5 possible matches (shared part number, not a government interchangeability claim): 4320-01-543-0820, 4320-01-543-1047, 4320-01-543-1089. Verify interchangeability with system specifications before substitution.
Key specifications for N-15934: Special Features: RING, CASE, LOWER SECOND STAGE, UNDERSIZE; MATERIAL BRG. BRONZE; MATERIAL SPEC ASTM B30/ASTM B505 ALLOY C91000; WEIGHT 4 LBS.; USED ON PUMP TYPE 5-2 CV-18 W/SPECIAL SLEEVE BEARING W; End Item Identification: PUMP, IN PORT DUMP CONDENSATE. 0 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.