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Wearing Ring NSN 4320-01-278-8683

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 4320-01-278-8683 NSN: 4320-01-278-8683

Features and Characteristics

Body Style
Grooved w/internal and external flange
Groove Depth
0.031 inches
Groove Width
0.062 inches
Overall Length
1.188 inches
Body Outside Diameter
7.685 inches
Body Inside Diameter
7.000 inches
End To Flange Distance
0.250 inches
Distance From End To Groove Center
0.375 inches
Internal Flange Inside Diameter
3.500 inches
Internal Flange Width
0.250 inches
Center Flange Thickness
0.750 inches
Smallest External Anchor Flange Radius
3.750 inches
Largest External Anchor Flange Radius
3.969 inches
Distance Below Centerline
0.062 inches
Corner Shape
Square all corners
Surface Finish
125.0 microinches inside
Special Features
2 equal grooves; 7.969 in. Flange diameter opposite locking end
Material
Copper alloy
FSC
4320 Power And Hand Pumps
NIIN
012788683
NSN
4320012788683

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
C227
Cage Code:
63857
Status:
A
MSDS:
Part Number:
11221
Cage Code:
54402
Status:
A
MSDS:
Part Number:
E-18076
Cage Code:
63857
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 4320-01-278-8683
What are the manufacturers of nsn 4320012788683?
Does this nsn 4320012788683 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4320012788683
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 4320012788683 contain any precious metals?
No precious metal content.
Does nsn 4320012788683 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4320012788683?
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
  •   Quality Fast Service
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