PROSPECTUS SUPPLEMENT NO. 4                  Filed Pursuant to Rule 424(b)(3)
(To Prospectus dated January 23, 2004)     Registration Statement No. 333-108544



                            SEALED AIR CORPORATION

                       6,160,708 SHARES OF COMMON STOCK

         This prospectus supplement relates to the offer and sale from time to
time of up to 6,160,708 shares of common stock, $0.10 par value per share, of
Sealed Air Corporation, a Delaware corporation, by the selling stockholders
named in the prospectus dated January 23, 2004 and in this prospectus
supplement. This prospectus supplement may only be delivered or used in
connection with our prospectus dated January 23, 2004. Our common stock is
traded on the New York Stock Exchange under the symbol "SEE."

         Neither the Securities and Exchange Commission nor any state
securities commission has approved or disapproved of these securities or
determined if this prospectus is truthful or complete. Any representation to
the contrary is a criminal offense.

                  PROSPECTUS SUPPLEMENT DATED APRIL 23, 2004







        The information appearing in the following table supplements or
supersedes in part the information in the table under the caption "Selling
Stockholders," beginning on page 9 in our prospectus and was provided by or on
behalf of the selling stockholders.








                                                   COMMON STOCK                      COMMON STOCK TO
                                                   BENEFICIALLY                      BE BENEFICIALLY
                                                   OWNED AS OF       COMMON STOCK      OWNED AFTER      PERCENTAGE OF
                                                    APRIL 22,      OFFERED IN THIS         THIS          ALL COMMON
                     NAME                            2004 (1)       PROSPECTUS (1)     OFFERING (1)       STOCK (2)
                     ----                          ------------    ---------------   ----------------   -------------
                                                                                            
International Truck & Engine Corporation
    Retiree Health Benefit Trust (3)                    7,357             7,357              --                --
UBS AG London Branch (4)                              287,142           287,142              --                --
Vanguard Convertible Securities Fund, Inc. (3)        392,999           392,999              --                --

                                      TOTAL (5)     6,160,708         6,160,708              --                --


________________

1.       For each selling stockholder, this number represents the number of
         shares of common stock that would be beneficially owned by such
         selling stockholder after the conversion of the Notes beneficially
         owned by such selling stockholder as of April 22, 2004, assumes that
         the selling stockholders will sell all shares of common stock offered
         by them under this prospectus, and further assumes that all of the
         Notes have been converted.

2.       For each selling stockholder, this number represents the percentage
         of common stock that would be owned by such selling stockholder after
         completion of the offering, based on the number of shares of common
         stock outstanding as of April 22, 2004 and assuming all the Notes
         beneficially owned by such selling stockholder as of April 22, 2004,
         have been converted.

3.       We have been advised that Mr. Lawrence Keele may be deemed the
         beneficial owner of these shares by virtue of his voting control and
         investment discretion.

4.       We have been advised that Messrs. Tom Klein, Pat Cositgan and Charles
         Dietz may be deemed the beneficial owners of these shares by virtue
         of their voting control and investment discretion.

5.       Assumes conversion of 100% of the outstanding Notes (without giving
         effect to any capital adjustments). We note that the aggregate number
         of shares of common stock requested to be registered by the selling
         stockholders is greater than the total number of shares initially
         issuable upon conversion of 100% of the outstanding Notes. This may
         be due in part to sales or other transfers of Notes among the selling
         stockholders in which the person acquiring the Notes submits a
         request to register shares of common stock which were previously
         registered by the person who sold the Notes.