The Ring,wearing, cataloged under National Stock Number 4320-01-443-7186, 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. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-443-7186 |
| Primary Part Number | 0654C0578S902A |
| Item Name | Ring,wearing |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Circor Naval Solutions Llc Dba Warren Pumps |
| Status | ACTIVE |
| Center Flange Thickness | 0.177 INCHES MAXIMUM IN |
| Body Style | EXTERNAL LOCKING FLANGE |
| Body Outside Diameter | 6.749 INCHES MAXIMUM IN |
| End to Flange Distance | 0.318 INCHES NOMINAL IN |
| Material Document and Classification | NAVSEA DWG 803-7226047 MIL STD SINGLE MATERIAL RESPONSE |
| Distance Below Centerline | 0.120 INCHES NOMINAL IN |
| Body Inside Diameter | 6.248 INCHES NOMINAL IN |
| Smallest External Anchor Flange Radius | 3.500 INCHES NOMINAL IN |
| Material | PLASTIC |
| Largest External Anchor Flange Radius | 3.620 INCHES NOMINAL IN |
| 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 |
|---|---|
| 0654C0578S902A PRIMARY | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| Reference | Meaning |
|---|---|
| 0654C0578S901A | 5/9 Secondary reference Circor Naval Solutions Llc Dba Warren Pumps |
NSN 4320-01-443-7186 is a Ring,wearing, manufactured by Circor Naval Solutions Llc Dba Warren Pumps, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-443-7186 has 1 manufacturer part number on file: 0654C0578S902A (Circor Naval Solutions Llc Dba Warren Pumps).
Key specifications for 0654C0578S902A: Center Flange Thickness: 0.177 INCHES MAXIMUM IN; Body Style: EXTERNAL LOCKING FLANGE; Body Outside Diameter: 6.749 INCHES MAXIMUM IN; End to Flange Distance: 0.318 INCHES NOMINAL IN. 10 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.