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Wearing Ring NSN 4320-01-381-3899

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 4320-01-381-3899 NSN: 4320-01-381-3899

Features and Characteristics

Body Style
Plain w/internal flange
Chamfer Length
0.060 inches outside right corner
Overall Length
2.125 inches
Bolt Circle Diameter
16.125 inches
Body Outside Diameter
17.749 inches
Body Inside Diameter
17.056 inches
Unthreaded Mounting Hole Diameter
0.312 inches
Bolt Hole Quantity
6
Internal Flange Inside Diameter
15.250 inches
Internal Flange Width
0.600 inches
Corner Shape
Square outside left corner
Surface Finish
125.0 microinches all surfaces
Chamfer Angle
30.0 degrees outside right corner
Special Features
Mercury free titanium casting; mounting holes c-bored; 2 holes 180.0 degrees apart threaded 0.38-16 unc-3b; 2 pry slots 180.0 degrees apart
Material
Steel
Material Specification
Astm b367, gr. C-2 assn standard single material response
FSC
4320 Power And Hand Pumps
NIIN
013813899
NSN
4320013813899

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
1700D6B
Cage Code:
88032
Status:
A
MSDS:
Part Number:
12089F18 ITEM 6
Cage Code:
88032
Status:
A
MSDS:
Part Number:
12089F18-6
Cage Code:
88032
Status:
A
MSDS:
Part Number:
12253D18 ITEM 6
Cage Code:
88032
Status:
A
MSDS:
Part Number:
12260D18
Cage Code:
88032
Status:
A
MSDS:
Part Number:
12089F18
Cage Code:
88032
Status:
A
MSDS:
Part Number:
12253D18
Cage Code:
88032
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 4320-01-381-3899
What are the manufacturers of nsn 4320013813899?
Does this nsn 4320013813899 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4320013813899
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 4320013813899 contain any precious metals?
No precious metal content.
Does nsn 4320013813899 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4320013813899?
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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