PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

9951Seal Assembly,shaft,spring Loade

Grundfos Cbs, Inc Dba Paco Pumps · NSN 4320-00-138-4461 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-138-4461 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-138-4461. Primary manufacturer part number: 9951.
Features
  • Seal Assembly,shaft,spring Loade — FSC 4320
  • General Characteristics Item Description: CONSISTS OF 8 ITEMS,1 CARBON P WASHER,1 BUNA WASHER,1 S.S. SPRING,1 BRASS DISK,1 BRASS DRIVE BAND,1 BRASS SPRING HOLDER,1 BRASS FERRULE
  • 1 verified cross-reference
  • Primary manufacturer: Grundfos Cbs, Inc Dba Paco Pumps
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 4320-00-138-4461, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Grundfos Cbs, Inc Dba Paco Pumps. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-00-138-4461
Primary Part Number9951
Item NameSeal Assembly,shaft,spring Loade
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerGrundfos Cbs, Inc Dba Paco Pumps
StatusACTIVE
General Characteristics Item DescriptionCONSISTS OF 8 ITEMS,1 CARBON P WASHER,1 BUNA WASHER,1 S.S. SPRING,1 BRASS DISK,1 BRASS DRIVE BAND,1 BRASS SPRING HOLDER,1 BRASS FERRULE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5905-00-147-96109951 INTERCHANGEABLE
Resistor,variable,wire Wound,pre
Sensor Systems, L.l.c. Dba Sensor Systems Llc
5905-00-430-22704047-360PC11 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
Huntington Ingalls Inc Div Newport News Shipbuilding
5935-00-502-19229951 INTERCHANGEABLE
Connector,plug,electrical
Hubbell Incorporated (delaware) Dba Wiring Device-Kellems Division
5110-00-509-807689-9951 INTERCHANGEABLE
Punch,fastener Setting
Morito Scovill Americas, Llc Dba Scovill Manufacturing
5935-01-033-9105 INTERCHANGEABLE
Connector,plug,electrical
6145-01-172-0999409916 INTERCHANGEABLE
Cable,special Purpose,electrical
Raytheon Company Dba Raytheon Co
9540-01-296-42859951 INTERCHANGEABLE
Angle,structural
Alcoa/reynolds Metals Company
8010-01-461-40989951 INTERCHANGEABLE
Thinner,paint Products
Lord Corp
5140-01-583-9615J9951 INTERCHANGEABLE
Tool Box,portable
The Stanley Works Dba Stanley Proto
Cross-Reference Index
Part NumberManufacturer
9951 PRIMARY Grundfos Cbs, Inc Dba Paco Pumps (USA)
Related Parts
5905-00-147-9610INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,PRE
9951
5905-00-430-2270INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
4047-360PC11
5935-00-502-1922INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
9951
5110-00-509-8076INTERCHANGEABLE
PUNCH,FASTENER SETTING
89-9951
5935-01-033-9105INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
6145-01-172-0999INTERCHANGEABLE
CABLE,SPECIAL PURPOSE,ELECTRICAL
409916
9540-01-296-4285INTERCHANGEABLE
ANGLE,STRUCTURAL
9951
8010-01-461-4098INTERCHANGEABLE
THINNER,PAINT PRODUCTS
9951
5140-01-583-9615INTERCHANGEABLE
TOOL BOX,PORTABLE
J9951

Frequently Asked Questions

What is NSN 4320-00-138-4461?

NSN 4320-00-138-4461 is a Seal Assembly,shaft,spring Loade, manufactured by Grundfos Cbs, Inc Dba Paco Pumps, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-00-138-4461?

NSN 4320-00-138-4461 has 1 cross-referenced part number: 9951 (Grundfos Cbs, Inc Dba Paco Pumps).

What NSN replaces 4320-00-138-4461?

There are 9 known substitutes for 4320-00-138-4461: 5905-00-147-9610, 5905-00-430-2270, 5935-00-502-1922 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 9951?

Key specifications for 9951: General Characteristics Item Description: CONSISTS OF 8 ITEMS,1 CARBON P WASHER,1 BUNA WASHER,1 S.S. SPRING,1 BRASS DISK,1 BRASS DRIVE BAND,1 BRASS SPRING HOLDER,1 BRASS FERRULE. 1 total characteristics are documented in the Federal Logistics Information System.

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