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Wearing Ring NSN 4320-00-398-8177

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 4320-00-398-8177 NSN: 4320-00-398-8177

Features and Characteristics

Body Style
Internal flange w/external locking flange
Overall Length
1.000 inches
Body Outside Diameter
5.748 inches
Body Inside Diameter
5.095 inches
Corner Radius
0.438 inches inside right corner
Left Side Flange Thickness
0.188 inches
Right Side Flange Thickness
0.188 inches
Distance Between Flanges
0.437 inches
End To Flange Distance
0.812 inches
Internal Flange Inside Diameter
4.125 inches
Internal Flange Width
0.250 inches
Smallest External Anchor Flange Radius
2.750 inches
Largest External Anchor Flange Radius
3.031 inches
Distance Below Centerline
0.062 inches
Distance From End
0.500 inches
Corner Shape
Square inside left cornerround inside right cornersquare outside left cornersquare outside right corner
Surface Finish
125.0 microinches all surfaces
Special Features
Undersize
Material
Copper alloy
FSC
4320 Power And Hand Pumps
NIIN
003988177
NSN
4320003988177

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
255377-25
Cage Code:
93232
Status:
A
MSDS:
Part Number:
12564P
Cage Code:
93232
Status:
A
MSDS:
Part Number:
SL-6528
Cage Code:
93232
Status:
A
MSDS:
Part Number:
SL5377PC62
Cage Code:
93232
Status:
A
MSDS:
Part Number:
SL6521PC62
Cage Code:
93232
Status:
A
MSDS:
Part Number:
SL6523PC62
Cage Code:
93232
Status:
A
MSDS:
Part Number:
255377-11
Cage Code:
93232
Status:
A
MSDS:
Part Number:
SL6528PC62
Cage Code:
93232
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 4320-00-398-8177
What are the manufacturers of nsn 4320003988177?
Does this nsn 4320003988177 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4320003988177
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 4320003988177 contain any precious metals?
No precious metal content.
Does nsn 4320003988177 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4320003988177?
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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