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Worldwide distributor of NSN parts and consumables located in the USA.

Wearing Ring

Model / MPN: 12889D18B | NSN: 4320-01-383-5678
ITAR Registered seal

A cylindrical item with or without flang (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.

Product Details
NATO Stock Number
4320-01-383-5678
Sold in multiples of
1 EA
DEMIL
NO
Body Style
Internal and external flange
Chamfer Length
0.125 inches outside left corner
Chamfer Length
0.250 inches inside left corner
Overall Length
0.734 inches
Bolt Circle Diameter
5.875 inches
Flange Diameter
6.937 inches
Body Outside Diameter
6.624 inches
Body Inside Diameter
5.419 inches
Left Side Flange Thickness
0.343 inches
Bolt Hole Quantity
4
End Application
Ingersoll rand centrifugal pump 10x20xbsx (asw pump)
Internal Flange Inside Diameter
5.190 inches
Internal Flange Width
0.331 inches
Corner Shape
Chamfered inside left corner
Corner Shape
Chamfered outside left corner
Corner Shape
Chamfered outside right corner
Corner Shape
Square inside right corner
Mounting Hole Thread Series Designator
Unc
Mounting Hole Thread Size
0.250 inches
Surface Finish
125.0 microinches outside
Chamfer Angle
30.0 degrees outside right corner
Chamfer Angle
45.0 degrees inside left corner
Chamfer Angle
45.0 degrees outside left corner
Material
Nickel alloy and copper alloy
Material Specification
Astm b171 c715 assn standard all material responses
Supplementary Features
Internal flange lip recessed
12889D Series Parts

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12889D18B Cross Reference
  • 12889D18
  • 12076F18-498B
  • 12889D18B
  • 12076F18-498B
  • 12889D18