The Seal Assembly,shaft,spring Loade, cataloged under National Stock Number 4320-01-230-3052, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Flowserve Pump Corporation Div Fluid Sealing Division. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-230-3052 |
| Primary Part Number | 31-125-45 |
| Item Name | Seal Assembly,shaft,spring Loade |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Flowserve Pump Corporation Div Fluid Sealing Division |
| Status | ACTIVE |
| General Characteristics Item Description | ITEM IS TYPE 31 MECHANICAL SEAL,MATERIAL MONEL WITH ROTATING SEAL FACEMADE OF CARBON,OUTSIDE DIAMETER 1.875 IN.,LENGTH 1.875 IN.,SEAT THICKNESS 0.437 IN.,SEAT INSIDE DIAMETER 1.291IN.,SEAL THICKNESS 0.409 IN. WILL WITHSTAND TEMPERATURES UP TO 400 DEGREES F,PRESSURE UP TO 250 POUNDS PER SQUARE IN. USED ON FEED AND BRUNE PUMPS ON BOARD 210 FT CLASS USCG VESSELS LBS |
| Cubic Measure | 1.875 CUBIC INCHES |
| Unpackaged Unit Weight | 4.000 POUNDS LBS |
| 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 |
|---|---|
| 31-125-45 PRIMARY | Flowserve Pump Corporation Div Fluid Sealing Division (USA) |
| 1001726000 | Mechanical Equipment Company, Inc. Dba Mechanical Equipment Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 31-125-45 | C/1 Advisory reference — outside the item-of-supply concept Parker-Hannifin Corp Div O-Ring Division |
NSN 4320-01-230-3052 is a Seal Assembly,shaft,spring Loade, manufactured by Flowserve Pump Corporation Div Fluid Sealing Division, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-230-3052 has 2 manufacturer part numbers on file: 31-125-45 (Flowserve Pump Corporation Div Fluid Sealing Division), 1001726000 (Mechanical Equipment Company, Inc. Dba Mechanical Equipment Co Inc).
Key specifications for 31-125-45: General Characteristics Item Description: ITEM IS TYPE 31 MECHANICAL SEAL,MATERIAL MONEL WITH ROTATING SEAL FACEMADE OF CARBON,OUTSIDE DIAMETER 1.875 IN.,LENGTH 1.875 IN.,SEAT THICKNESS 0.437 IN.,SEAT INSIDE DIAMETER 1.291IN.,SEAL THICKNESS 0.409 IN. WILL WITHSTAND TEMPERATURES UP TO 400 DEGREES F,PRESSURE UP TO 250 POUNDS PER SQUARE IN. USED ON FEED AND BRUNE PUMPS ON BOARD 210 FT CLASS USCG VESSELS LBS; Cubic Measure: 1.875 CUBIC INCHES; Unpackaged Unit Weight: 4.000 POUNDS LBS. 3 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.