Model: 177692-81

Valve Seat

Properties:

Flange Diameter

Between 0.497 inches and 0.499 inches

Body Outside Diameter

Between 0.377 inches and 0.379 inches

Body Inside Diameter

Between 0.280 inches and 0.281 inches

Seat Radius

Between 0.005 inches and 0.025 inches

Flange Seat To Disk End Height

0.075 mils and 0.076 centimeters

Under Flange Height

Between 0.068 inches and 0.073 inches

Seating Surface Shape

Radial

Material

Plastic polyamide

Material Specification

Mil-m-20693, type 3, grade natural color military specification single material response

Style Designator

Plain flanged

NSN

4820-00-136-2024

Part Number

177692-81

Description

Seat,valve

CAGE

99657

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 177692-81 NSN 4820-00-136-2024

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:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

Paclk Weight:

Item Weight:

Item Dim:

OPI

SPI No.

SPI Rev.

SPC Mkg.

LVL A

LVL B

OPI:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

051080

UFC:

29300

LTL:

RATING VARIABLE

LCL:

WCC:

576

TCC:

SHC:

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