POWER OF ATTORNEY

Know all by these presents, that the undersigned hereby constitutes and
appoints each of H. Katherine White, Sean E. Dempsey and Barbara A.
Pieczonka, signing singly, the undersigned's true and lawful
attorney-in-fact to:

(1)	execute for and on behalf of the undersigned, in the
undersigned's capacity as an officer and/or director of Sealed Air
Corporation, a Delaware corporation formerly known as W. R. Grace & Co.
(the "Company"), Forms 3, 4 and 5, or any amendment thereof, in
accordance with Section 16(a) of the Securities Exchange Act of 1934
and the rules thereunder;

(2)	do and perform any and all acts for and on behalf of the
undersigned which may be necessary or desirable to complete and execute
any such Form 3, 4 or 5, or any amendment thereof, and timely file the
same with the United States Securities and Exchange Commission, the
New York Stock Exchange and any other stock exchange or similar
authority with which the same are required to be filed; and

(3)	take any other action of any type whatsoever in connection with
the foregoing which, in the opinion of such attorney-in-fact, may be of
benefit to, in the best interest of, or legally required by, the
undersigned, it being understood that the documents executed by
such attorney-in-fact on behalf of the undersigned pursuant to this
Power of Attorney shall be in such form and shall contain such terms and
conditions as such attorney-in-fact may approve in such
attorney-in-fact's discretion.

The undersigned hereby grants to each such attorney-in-fact full power
and authority to do and perform any and every act and thing whatsoever
requisite, necessary, or proper to be done in the exercise of any of the
rights and powers herein granted, as fully to all intents and purposes as
the undersigned might or could do if personally present, with full power
of substitution or revocation, hereby ratifying and confirming all that
such attorney-in-fact, or such attorney-in-fact's substitute or substitutes,
shall lawfully do or cause to be done by virtue of this power of attorney
and the rights and powers herein granted.  The undersigned acknowledges
that the foregoing attorneys-in-fact, in serving in such capacity at the
request of the undersigned, are not assuming, nor is the Company assuming,
any of the undersigned's responsibilities to comply with Section 16 of the
Securities Exchange Act of 1934.

This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4 and 5, or any amendment
thereof, with respect to the undersigned's holdings of and transactions in
securities issued by the Company, unless earlier revoked by the undersigned
in a signed writing delivered to the foregoing attorneys-in-fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to
be executed as of this _21____ day of ____August_____________, 2002.

                                                   /s/ Mary A. Coventry
                                                  MARY A. COVENTRY
d&o\poweratymary.pwr