PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

331821Seal Assembly,shaft,spring Loade

Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer · NSN 4320-00-709-6108 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-709-6108 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-709-6108. Primary manufacturer part number: 331821.
Features
  • Seal Assembly,shaft,spring Loade — FSC 4320
  • 4 verified cross-references
  • Primary manufacturer: Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
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 4320-00-709-6108, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer. This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Catalog Facts
Item NameSeal Assembly,shaft,spring Loade
FSC / FSG4320 — No Item Name Available (FSG 43)
ManufacturersDover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (CAGE 07524); Lift Parts Mfg Co Inc Div of Echlin Mfg Co the (CAGE 16662)
Technical Specifications
ParameterValue
NSN4320-00-709-6108
Primary Part Number331821
Item NameSeal Assembly,shaft,spring Loade
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerDover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
5935-00-259-3880UG447U INTERCHANGEABLE
Connector,receptacle,electrical
Joint Electronics Type Designation System
3455-00-268-9506B842 INTERCHANGEABLE
Cutter,milling,screw Slotting
F & D Tool Co Inc
5935-00-665-6099 INTERCHANGEABLE
Connector,receptacle,electrical
5133-00-988-5673 INTERCHANGEABLE
Drill,twist
5120-01-348-02415120013480241 INTERCHANGEABLE
Wrench Set,spanner
General Services Administration Federal Supply Service
4730-01-441-649531817 INTERCHANGEABLE
Packing Nut
Evoqua Water Technologies Llc
5305-01-589-602612759-01038 INTERCHANGEABLE
Screw,machine
Fastenal Company Dba Fastenal Co
Cross-Reference Index
Part NumberManufacturer
331821 PRIMARY Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA)
QG331821 Lift Parts Mfg Co Inc Div of Echlin Mfg Co the (USA)
E2910PC153AT0153J Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA)
31817 Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA)
Related Parts
5935-00-259-3880INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
UG447U
3455-00-268-9506INTERCHANGEABLE
CUTTER,MILLING,SCREW SLOTTING
B842
5935-00-665-6099INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
5133-00-988-5673INTERCHANGEABLE
DRILL,TWIST
5120-01-348-0241INTERCHANGEABLE
WRENCH SET,SPANNER
5120013480241
4730-01-441-6495INTERCHANGEABLE
PACKING NUT
31817
5305-01-589-6026INTERCHANGEABLE
SCREW,MACHINE
12759-01038

Frequently Asked Questions

What is NSN 4320-00-709-6108?

NSN 4320-00-709-6108 is a Seal Assembly,shaft,spring Loade, manufactured by Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer, classified under FSC 4320 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4320-00-709-6108?

NSN 4320-00-709-6108 has 4 cross-referenced part numbers: 331821 (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer), QG331821 (Lift Parts Mfg Co Inc Div of Echlin Mfg Co the), E2910PC153AT0153J (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer), 31817 (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer).

What NSN replaces 4320-00-709-6108?

There are 7 known substitutes for 4320-00-709-6108: 5935-00-259-3880, 3455-00-268-9506, 5935-00-665-6099 and 4 more. Verify interchangeability with system specifications before substitution.

Is NSN 4320-00-709-6108 still in active supply?

NSN 4320-00-709-6108 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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