-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 Pb7+DmxS7zNIlN/gmPlCdCowwtA6o1HdTttrr9emFtHyVmWbm1oLTmVQfbPhXhqB
 aP4IpHsVqfmw1Yte+GSULA==

<SEC-DOCUMENT>0001319464-08-000010.txt : 20080709
<SEC-HEADER>0001319464-08-000010.hdr.sgml : 20080709
<ACCEPTANCE-DATETIME>20080709171534
ACCESSION NUMBER:		0001319464-08-000010
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080707
FILED AS OF DATE:		20080709
DATE AS OF CHANGE:		20080709

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PURADYN FILTER TECHNOLOGIES INC
		CENTRAL INDEX KEY:			0001019787
		STANDARD INDUSTRIAL CLASSIFICATION:	MOTOR VEHICLE PARTS & ACCESSORIES [3714]
		IRS NUMBER:				141708544
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		2017 HIGH RIDGE ROAD
		CITY:			BOYTON BEACH
		STATE:			FL
		ZIP:			33426
		BUSINESS PHONE:		5615479499

	MAIL ADDRESS:	
		STREET 1:		2017 HIGH RIDGE ROAD
		CITY:			BOYTON BEACH
		STATE:			FL
		ZIP:			33426

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	T F PURIFINER INC
		DATE OF NAME CHANGE:	19960726

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SANDLER ALAN J
		CENTRAL INDEX KEY:			0001199345

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-11991
		FILM NUMBER:		08945601

	MAIL ADDRESS:	
		STREET 1:		3020 HOGH RIDGE RD
		STREET 2:		SUITE 100
		CITY:			BOYNTON BEACH
		STATE:			FL
		ZIP:			33426
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-07-07</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001019787</issuerCik>
        <issuerName>PURADYN FILTER TECHNOLOGIES INC</issuerName>
        <issuerTradingSymbol>pfti</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001199345</rptOwnerCik>
            <rptOwnerName>SANDLER ALAN J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2017 HIGH RIDGE ROAD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>BOYNTON BEACH</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33426</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Administrative Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-07-07</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>D</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>260000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.375</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>58392</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>Cindy Lea Gimler</signatureName>
        <signatureDate>2008-07-09</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----