-----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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 NrKZmrtUBlNKTeSiFKs8Hg==

<SEC-DOCUMENT>0001213306-06-000001.txt : 20060922
<SEC-HEADER>0001213306-06-000001.hdr.sgml : 20060922
<ACCEPTANCE-DATETIME>20060922161610
ACCESSION NUMBER:		0001213306-06-000001
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20050307
FILED AS OF DATE:		20060922
DATE AS OF CHANGE:		20060922

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MOREL DONALD E JR
		CENTRAL INDEX KEY:			0001213306

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-08036
		FILM NUMBER:		061104560

	BUSINESS ADDRESS:	
		STREET 1:		101 GORDON DR
		CITY:			LIONVILLE
		STATE:			PA
		ZIP:			19341
		BUSINESS PHONE:		6105942916

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			WEST PHARMACEUTICAL SERVICES INC
		CENTRAL INDEX KEY:			0000105770
		STANDARD INDUSTRIAL CLASSIFICATION:	FABRICATED RUBBER PRODUCTS, NEC [3060]
		IRS NUMBER:				231210010
		STATE OF INCORPORATION:			PA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		101 GORDON DR
		STREET 2:		P O BOX 645
		CITY:			LIONVILLE
		STATE:			PA
		ZIP:			19341-0645
		BUSINESS PHONE:		6105942900

	MAIL ADDRESS:	
		STREET 1:		101 GORDON DRIVE
		STREET 2:		PO BOX 645
		CITY:			LIONVILLE
		STATE:			PA
		ZIP:			19341-0645

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	WEST CO INC
		DATE OF NAME CHANGE:	19990405
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2005-03-07</periodOfReport>

    <dateOfOriginalSubmission>2004-05-07</dateOfOriginalSubmission>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000105770</issuerCik>
        <issuerName>WEST PHARMACEUTICAL SERVICES INC</issuerName>
        <issuerTradingSymbol>wst</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001213306</rptOwnerCik>
            <rptOwnerName>MOREL DONALD E JR</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>101 GORDON DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LIONVILLE</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>19341</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chairman of the Board &amp; CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
                <footnoteId id="F1"/>
                <footnoteId id="F2"/>
            </securityTitle>
            <transactionDate>
                <value>2005-03-07</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>21474.221</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>82172.6452</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
                <footnoteId id="F1"/>
                <footnoteId id="F2"/>
            </securityTitle>
            <transactionDate>
                <value>2006-02-24</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>35570</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>198293.3463</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Settlement for stock of Performance Rights that are non-derivative securities. See explanation below for further information.</footnote>
        <footnote id="F2">The Reporting Person was awarded 18,076 Performance Vesting Restricted (PVR) Shares on May 5, 2004 and 35,924 PVR Shares on June 29, 2004 for a total of 54,000 PVR Shares following the Company's 2004 stock split. The 2004 PVR Share Awards were inappropriately reported as restricted stock awards. In fact, the 2004 PVR Share Awards constituted performance rights that are non-derivative securities. As such, no reports should have been filed until the PVR Awards are settled in stock. Reporting the initial grant resulted in an overstatement of the amount of securities beneficially owned (Column 5, Table 1) in subsequently filed reports. The Reporting Person is filing this report to: (i) properly characterize the PVR Shares as performance rights; and (ii) adjust the amount of securities beneficially owned and eliminate the overstatement.</footnote>
        <footnote id="F3">Amount as of filing date.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>By Joanne K. Boyle As Agent for Donald E. Morel, Jr.</signatureName>
        <signatureDate>2006-09-22</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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