Model: 206-18-640

Valve Seat
Description:

20.437 inches flange diameter, 20.437 inches body outside diameter, 18.062 inches body inside diameter, 0.593 inches flange seat to disk end height.

Properties:

Flange Diameter
20.437 inches
Body Outside Diameter
20.437 inches
Body Inside Diameter
18.062 inches
Flange Seat To Disk End Height
0.593 inches
Under Flange Height
2.562 inches
Seating Surface Shape
Flat
Material
Rubber synthetic
Style Designator
Plain flanged
NSN
4820-00-016-0252
Part Number
206-18-640
Description
Seat,valve
CAGE
04613

A replaceable item designed to provide a stationary seating surface for a mating, moveable item such as a valve disk or the like. The body may have a flange of various shapes. For diesel and gasoline reciprocating engines, see insert, engine valve seat.

Part 206-18-640 NSN 4820-00-016-0252

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
22113
FIIG:
A15500
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:
000000
UFC:
00000
LTL:
NO RATING
LCL:
--
WCC:
772
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 8481909090
  • SITC: 74790
  • End Use: Industrial machines, other
  • NAICS: 332911
  • USDA: 1

Freight Class: Parts of taps, cocks, valves and similar appliances, nesoi

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