Model: 218020208

Valve Seat

Special Features:

A/k/a seat upper

Properties:

Thread Class
3a single threaded portion
Thread Length
0.650 inches single threaded portion
Flange Diameter
5.750 inches
Body Outside Diameter
5.360 inches
Body Inside Diameter
4.625 inches
End Application
Seawolf class ssn
Flange Seat To Disk End Height
0.600 inches
Under Flange Height
0.775 inches
Thready Qty Per Inch (tpi)
12 single threaded portion
Hardness Rating
115.0 rockwell r seat
Thread Size
5.500 inches single threaded portion
Seating Surface Shape
Flat
Material
Plastic polytetrafluoroethylene seat
Style Designator
Plain flanged
Thread Series Designator
Un single threaded portion
NSN
4820-01-442-0424
Part Number
218020208
Description
Seat,valve
CAGE
53711

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 218020208 NSN 4820-01-442-0424

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:
A
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.5000lbs
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:
051080
UFC:
29300
LTL:
RATING VARIABLE
LCL:
--
WCC:
594
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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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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