The Ring,wearing, cataloged under National Stock Number 4320-00-379-0232, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Patterson Pump Co Div Patterson Pump Company. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 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 | 4320-00-379-0232 |
| Primary Part Number | B4-2#72-25852 |
| Item Name | Ring,wearing |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Patterson Pump Co Div Patterson Pump Company |
| Status | ACTIVE |
| Internal Flange Outside Diameter | 5.625 INCHES NOMINAL IN |
| Body Outside Diameter | 6.750 INCHES NOMINAL IN |
| Internal Flange Inside Diameter | 5.000 INCHES NOMINAL IN |
| Distance Below Centerline | 0.312 INCHES NOMINAL IN |
| Body Inside Diameter | 6.125 INCHES NOMINAL IN |
| Material | COPPER ALLOY |
| Internal Flange Width | 0.500 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 |
|---|---|
| 25852 | Banner Industries Inc Skinner Engine Co Div (USA) |
| B4-2#72-25852 PRIMARY | Patterson Pump Co Div Patterson Pump Company (USA) |
| 25852 | Patterson Pump Co Div Patterson Pump Company (USA) |
NSN 4320-00-379-0232 is a Ring,wearing, manufactured by Patterson Pump Co Div Patterson Pump Company, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-379-0232 has 3 manufacturer part numbers on file: 25852 (Banner Industries Inc Skinner Engine Co Div), B4-2#72-25852 (Patterson Pump Co Div Patterson Pump Company), 25852 (Patterson Pump Co Div Patterson Pump Company).
5 possible matches (shared part number, not a government interchangeability claim): 4730-00-557-9956, 5330-00-994-7606, 5365-01-230-0638. Verify interchangeability with system specifications before substitution.
Key specifications for B4-2#72-25852: Internal Flange Outside Diameter: 5.625 INCHES NOMINAL IN; Body Outside Diameter: 6.750 INCHES NOMINAL IN; Overall Length: 1.000 INCHES NOMINAL IN; Internal Flange Inside Diameter: 5.000 INCHES NOMINAL IN. 7 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.