-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>0000866706-05-000104.txt : 20050826
<SEC-HEADER>0000866706-05-000104.hdr.sgml : 20050826
<ACCEPTANCE-DATETIME>20050826111751
ACCESSION NUMBER:		0000866706-05-000104
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20050824
FILED AS OF DATE:		20050826
DATE AS OF CHANGE:		20050826

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ESCO TECHNOLOGIES INC
		CENTRAL INDEX KEY:			0000866706
		STANDARD INDUSTRIAL CLASSIFICATION:	SEARCH, DETECTION, NAVIGATION, GUIDANCE, AERONAUTICAL SYS [3812]
		IRS NUMBER:				431554045
		STATE OF INCORPORATION:			MO
		FISCAL YEAR END:			0930

	BUSINESS ADDRESS:	
		STREET 1:		8888 LADUE RD
		STREET 2:		SUITE 200
		CITY:			ST LOUIS
		STATE:			MO
		ZIP:			63124-2090
		BUSINESS PHONE:		3142137200

	MAIL ADDRESS:	
		STREET 1:		8888 LADUE RD
		STREET 2:		SUITE 200
		CITY:			ST LOUIS
		STATE:			MO
		ZIP:			63124-2090

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ESCO ELECTRONICS CORP
		DATE OF NAME CHANGE:	19920703

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MUENSTER GARY E
		CENTRAL INDEX KEY:			0001216230

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-10596
		FILM NUMBER:		051050630

	BUSINESS ADDRESS:	
		STREET 1:		C/O ESCO TECHNOLOGIES
		STREET 2:		8888 LADUE ROAD
		CITY:			ST LOUIS
		STATE:			MO
		ZIP:			63124
		BUSINESS PHONE:		314 213 7200

	MAIL ADDRESS:	
		STREET 1:		C/O ESCO TECHNOLOGIES INC
		STREET 2:		8888 LADUE ROAD
		CITY:			ST. LOUIS
		STATE:			MO
		ZIP:			63124
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>gemuensterform4_ex.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

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    <periodOfReport>2005-08-24</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
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        <issuerName>ESCO TECHNOLOGIES INC</issuerName>
        <issuerTradingSymbol>ESE</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
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            <rptOwnerName>MUENSTER GARY E</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ESCO TECHNOLOGIES INC</rptOwnerStreet1>
            <rptOwnerStreet2>8888 LADUE ROAD</rptOwnerStreet2>
            <rptOwnerCity>ST. LOUIS</rptOwnerCity>
            <rptOwnerState>MO</rptOwnerState>
            <rptOwnerZipCode>63124</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Vice President &amp; CFO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

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            <transactionAmounts>
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                <transactionAcquiredDisposedCode>
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            <transactionAmounts>
                <transactionShares>
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                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
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                <transactionAcquiredDisposedCode>
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    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>G. E. Muenster</signatureName>
        <signatureDate>2005-08-26</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----