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Wearing Ring NSN 4320-00-787-8820

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 4320-00-787-8820 NSN: 4320-00-787-8820

Features and Characteristics

Counterbore Diameter
Between 3.562 inches and 3.563 inches
Counterbore Depth
0.531 inches
Groove Depth
0.094 inches
Groove Width
0.125 inches
Overall Length
1.125 inches
Body Outside Diameter
Between 4.021 inches and 4.023 inches
Body Inside Diameter
Between 3.248 inches and 3.249 inches
Groove Quantity
4
Corner Shape
Square all corners
Surface Finish
50.0 microinches all surfaces
Material
Copper alloy
FSC
4320 Power And Hand Pumps
NIIN
007878820
NSN
4320007878820

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
31-1-199BG
Cage Code:
10941
Status:
A
MSDS:
Part Number:
31HCS24PC146A
Cage Code:
10941
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 4320-00-787-8820
What are the manufacturers of nsn 4320007878820?
Does this nsn 4320007878820 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4320007878820
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 4320007878820 contain any precious metals?
Precious metal content is unknown.
Does nsn 4320007878820 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4320007878820?
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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  •   On Time Delivery
  •   Certificate of Conformance
  •   Quality Inspected Parts
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