Model: 17181P20

Valve Seat

Properties:

Flange Diameter

Between 2.633 inches and 2.653 inches

Body Outside Diameter

Between 2.733 inches and 2.777 inches

Body Inside Diameter

Between 2.182 inches and 2.192 inches

Flange Seat To Disk End Height

Between 0.436 inches and 0.438 inches

Under Flange Height

Between 0.136 inches and 0.144 inches

Seat Angle In Deg

45.000

Hardness Rating

90.0 rockwell b and 105.0 rockwell b

Seating Surface Shape

Angular

Material

Steel

Material Specification

Ams 5700 assn standard single material response

Style Designator

Plain flanged

Fsc Application Data

Aircraft eng r1830

NSN

4820-00-344-1449

Part Number

17181P20

Description

Seat,valve

CAGE

77445

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 17181P20 NSN 4820-00-344-1449

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

22113

FIIG:

A15500

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

051080

UFC:

29300

LTL:

RATING VARIABLE

LCL:

60.0

WCC:

594

TCC:

SHC:

ACC:

Equipment for Aircraft

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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