<SEC-DOCUMENT>0001127602-20-023137.txt : 20200807
<SEC-HEADER>0001127602-20-023137.hdr.sgml : 20200807
<ACCEPTANCE-DATETIME>20200807120142
ACCESSION NUMBER:		0001127602-20-023137
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20200806
FILED AS OF DATE:		20200807
DATE AS OF CHANGE:		20200807

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Deily Karl R
		CENTRAL INDEX KEY:			0001356427

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12139
		FILM NUMBER:		201084521

	MAIL ADDRESS:	
		STREET 1:		C/O SEALED AIR CORPORATION
		STREET 2:		200 RIVERFRONT BOULEVARD
		CITY:			ELMWOOD PARK
		STATE:			NJ
		ZIP:			07407

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SEALED AIR CORP/DE
		CENTRAL INDEX KEY:			0001012100
		STANDARD INDUSTRIAL CLASSIFICATION:	PLASTIC MATERIAL, SYNTH RESIN/RUBBER, CELLULOS (NO GLASS) [2820]
		IRS NUMBER:				650654331
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		2415 CASCADE POINTE BOULEVARD
		CITY:			CHARLOTTE
		STATE:			NC
		ZIP:			28208
		BUSINESS PHONE:		980-221-3235

	MAIL ADDRESS:	
		STREET 1:		2415 CASCADE POINTE BOULEVARD
		CITY:			CHARLOTTE
		STATE:			NC
		ZIP:			28208

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	WR GRACE & CO/DE
		DATE OF NAME CHANGE:	19961015

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	GRACE HOLDING INC
		DATE OF NAME CHANGE:	19960805
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>form4.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2020-08-06</periodOfReport>

    <issuer>
        <issuerCik>0001012100</issuerCik>
        <issuerName>SEALED AIR CORP/DE</issuerName>
        <issuerTradingSymbol>SEE</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001356427</rptOwnerCik>
            <rptOwnerName>Deily Karl R</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O SEALED AIR CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>2415 CASCADE POINTE BOULEVARD</rptOwnerStreet2>
            <rptOwnerCity>CHARLOTTE</rptOwnerCity>
            <rptOwnerState>NC</rptOwnerState>
            <rptOwnerZipCode>28208</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isOfficer>1</isOfficer>
            <officerTitle>Senior Vice President</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2020-08-06</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>63349</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>40.0049</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>196398</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>7233</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By 401k and Profit Sharing Plan</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 Trading Plan adopted by the reporting person.</footnote>
        <footnote id="F2">The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $40.00 to $40.23 inclusive. The reporting person undertakes to provide to Sealed Air Corporation, any security holder of Sealed Air Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Youhao Dong, attorney-in-fact for Mr. Deily</signatureName>
        <signatureDate>2020-08-07</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
