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Wearing Ring NSN 4320-01-155-3957

Item Description

A cylindrical item with or without flange(s), designed to be inserted in a pump casing or secured to the impeller of a centrifugal pump. It is used for the purpose of providing a close running clearance between the impeller and casing in order to prevent or overcome leakage due to erosion. It may also be used as a diffuser ring in the suction and discharge throats of valves.

NSN 4320-01-155-3957 NSN: 4320-01-155-3957

Features and Characteristics

Body Style
Plain
Overall Length
0.438 inches
Body Outside Diameter
4.116 inches
Body Inside Diameter
3.625 inches
End Application
4320-01-155-3956, used onboard 180 ft class u. S. Coast guard vessels
Corner Shape
Square all corners
Surface Finish
125.0 microinches all surfaces
Special Features
Oversized outside diameter, may require machining of pump housing at time of installation to obtain required press fit
Material
Copper alloy 903
FSC
4320 Power And Hand Pumps
NIIN
011553957
NSN
4320011553957

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
C-0046-08
Cage Code:
62503
Status:
A
MSDS:
Part Number:
B-0107
Cage Code:
62503
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 8413919520
  • NAICS: 333911
  • SITC: 74291
  • Description: Parts, nesoi, of pumps for liquids
  • End Use (Code 21100):
    Industrial engines

Q & A

Frequently asked questions for NSN 4320-01-155-3957
What are the manufacturers of nsn 4320011553957?
Does this nsn 4320011553957 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4320011553957
A cylindrical item with or without flange(s), designed to be inserted in a pump casing or secured to the impeller of a centrifugal pump. it is used for the purpose of providing a close running clearance between the impeller and casing in order to prevent or overcome leakage due to erosion. it may also be used as a diffuser ring in the suction and discharge throats of valves.
Does nsn 4320011553957 contain any precious metals?
No precious metal content.
Does nsn 4320011553957 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4320011553957?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
22534
FIIG:
A19900
App. Key:
A
Cond. Code:
2
Status:
A

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  •   Certificate of Conformance
  •   Quality Inspected Parts
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