Model: 57-2-4

Wearing Ring

Special Features:

One positioning lug 0.250 in. Diameter by 0.250 in. Lg locatedon periphery of body, 0.312 in. From inside of, flange tocenter of hole

Properties:

Body Style
External flange
Overall Length
0.812 inches
Flange Diameter
4.250 inches
Body Outside Diameter
Between 4.000 inches and 4.001 inches
Body Inside Diameter
Between 3.499 inches and 3.500 inches
Left Side Flange Thickness
0.125 inches
Corner Shape
Square all corners
Surface Finish
125.0 microinches inside
Surface Finish
125.0 microinches outside
Surface Finish
125.0 microinches left face
Surface Finish
125.0 microinches right face
Material
Copper alloy
NSN
4320-00-097-0842
Part Number
57-2-4
Description
Ring,wearing
CAGE
77212

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.

Part 57-2-4 NSN 4320-00-097-0842

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
22534
FIIG:
A19900
Concept No.:
App. Key:
A
Cond. Code:
2
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
128000
UFC:
64870
LTL:
85.0
LCL:
--
WCC:
594
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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