Model: B37A

Wearing Ring

Special Features:

Three countersunk holes, 0.312 in. Min id 0.375 in. Max id, in outer periphery spaced 120 degree apart located 0.312 in. From internal flange end; w/three set screws

Properties:

Body Style
Plain w/internal flange
Chamfer Length
0.062 inches inside right corner and 0.078 inches inside right corner
Overall Length
0.812 inches
Body Outside Diameter
Between 8.362 inches and 8.364 inches
Body Inside Diameter
Between 7.886 inches and 7.888 inches
Internal Flange Inside Diameter
Between 7.749 inches and 7.750 inches
Internal Flange Width
0.625 inches
Corner Shape
Chamfered inside right corner
Corner Shape
Square inside left corner
Corner Shape
Square outside left corner
Corner Shape
Square outside right corner
Surface Finish
125.0 microinches inside
Surface Finish
125.0 microinches counterbore
Surface Finish
125.0 microinches outside
Surface Finish
125.0 microinches left face
Surface Finish
125.0 microinches right face
Chamfer Angle
45.0 degrees inside right corner
Material
Copper alloy
Material Specification
Qq-c-390, alloy d5 federal specification single material response
NSN
4320-00-203-3516
Part Number
B37A
Description
Ring,wearing
CAGE
63857

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 B37A NSN 4320-00-203-3516

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

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
3.1000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

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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Schedule B and Export
  • Schedule B: 8413919520
  • SITC: 74291
  • End Use: Industrial engines
  • NAICS: 333911
  • USDA: 1

Freight Class: Parts, nesoi, of pumps for liquids

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