NSN 4820-00-404-7125

Valve Seat Insert

About this product

9.750 inches body inside diameter, 45.000 seat angle in deg, angular seating surface shape, material: plastic, phenolic and rubber .

Manufacturer part number NB10-4 for national stock number 4820004047125.


  • Product description

    Valve Seat NSN 4820-00-404-7125.

  • MPN or Model


  • Schedule B
    8481.90.9090 (Parts of taps, cocks, valves and similar appliances, nesoi)
  • NMF (National Motor Freight)
    000000 - No Nmfc Freight Description
  • Overall Height
    Between 2.658 inches and 2.668 inches
  • Body Outside Diameter
    11.491 inches
  • Body Inside Diameter
    9.750 inches
  • Seat Angle In Deg
  • Seating Surface Shape
  • Material
    Plastic, phenolic and rubber
  • Style Designator
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Valve Seat

A replaceable item designed to provide a stationary seating surface for a mating, moveable item such as a valve disk or the like. The body may have a flange of various shapes. For diesel and gasoline reciprocating engines, see insert, engine valve seat.

Mechanic Bill explains Valve Seat Insert

Pricing and Availability

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NSN 4820004047125

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NB10-4 Mcc Holdings, Inc.
NB10-4 Mcc Holdings, Inc.
Stock Check
Availability for this item was last checked on 05/25/23. The quantities and conditions available at the time were:
  • NS: 245