PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12561Seal Assembly,shaft,spring Loade

Flowserve Pump Corporation Div Fluid Sealing Division · NSN 4320-01-367-4063 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-01-367-4063 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-367-4063. Primary manufacturer part number: 12561.
Features
  • Seal Assembly,shaft,spring Loade — FSC 4320
  • 3 verified cross-references
  • Primary manufacturer: Flowserve Pump Corporation Div Fluid Sealing Division
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Mechanical energy storage
  • Vibration dampening
General Description

The Seal Assembly,shaft,spring Loade, cataloged under National Stock Number 4320-01-367-4063, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Flowserve Pump Corporation Div Fluid Sealing Division. This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameSeal Assembly,shaft,spring Loade
FSC / FSG4320 — No Item Name Available (FSG 43)
ManufacturersFlowserve Pump Corporation Div Fluid Sealing Division (CAGE 67209)
Technical Specifications
ParameterValue
NSN4320-01-367-4063
Primary Part Number12561
Item NameSeal Assembly,shaft,spring Loade
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerFlowserve Pump Corporation Div Fluid Sealing Division
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5330-00-057-3375 INTERCHANGEABLE
Gasket
5985-00-060-2043580R064H01 INTERCHANGEABLE
Dummy Load,electrical
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
5110-00-203-4936 INTERCHANGEABLE
File,hand
5950-00-421-9286PS76264-1 INTERCHANGEABLE
Reactor
Rockwell Collins, Inc. Dba Rc Displays Systems
5945-00-511-03401256-1 INTERCHANGEABLE
Relay,electromagnetic
Naval Air Warfare Center Aircraft Division Joint Base Jbmdl
5950-00-567-447612561 INTERCHANGEABLE
Reactor
Oeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems
5120-00-632-973112561 INTERCHANGEABLE
Wrench,compressor N
Stanley Industrial & Automotive Llc
5120-00-869-6987 INTERCHANGEABLE
Bit,male Contact Re
1377-01-102-89631256-1 INTERCHANGEABLE
Initiator,propellant Actuated
Rockwell Collins Inc
6140-01-225-5935PS-670 INTERCHANGEABLE
Battery,storage
Power-Sonic Corporation
Cross-Reference Index
Part NumberManufacturer
335V Flowserve Pump Corporation Div Fluid Sealing Division (USA)
21-250-61 Flowserve Pump Corporation Div Fluid Sealing Division (USA)
12561 PRIMARY Flowserve Pump Corporation Div Fluid Sealing Division (USA)
Related Parts
5330-00-057-3375INTERCHANGEABLE
GASKET
5985-00-060-2043INTERCHANGEABLE
DUMMY LOAD,ELECTRICAL
580R064H01
5110-00-203-4936INTERCHANGEABLE
FILE,HAND
5950-00-421-9286INTERCHANGEABLE
REACTOR
PS76264-1
5945-00-511-0340INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
1256-1
5950-00-567-4476INTERCHANGEABLE
REACTOR
12561
5120-00-632-9731INTERCHANGEABLE
WRENCH,COMPRESSOR N
12561
5120-00-869-6987INTERCHANGEABLE
BIT,MALE CONTACT RE
1377-01-102-8963INTERCHANGEABLE
INITIATOR,PROPELLANT ACTUATED
1256-1
6140-01-225-5935INTERCHANGEABLE
BATTERY,STORAGE
PS-670
5935-01-332-8425INTERCHANGEABLE
CONNECTOR BODY,RECEPTACLE,ELECTR
212506-1
5340-01-349-3176INTERCHANGEABLE
COVER,ACCESS
12561

Frequently Asked Questions

What is NSN 4320-01-367-4063?

NSN 4320-01-367-4063 is a Seal Assembly,shaft,spring Loade, manufactured by Flowserve Pump Corporation Div Fluid Sealing Division, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-01-367-4063?

NSN 4320-01-367-4063 has 3 cross-referenced part numbers: 335V (Flowserve Pump Corporation Div Fluid Sealing Division), 21-250-61 (Flowserve Pump Corporation Div Fluid Sealing Division), 12561 (Flowserve Pump Corporation Div Fluid Sealing Division).

What NSN replaces 4320-01-367-4063?

There are 12 known substitutes for 4320-01-367-4063: 5330-00-057-3375, 5985-00-060-2043, 5110-00-203-4936 and 9 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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