Exhibit 5

Sealed Air Corporation

2415 Cascade Pointe Boulevard

Charlotte, North Carolina 28208

Telephone: (980) 221-3235

June 17, 2024

Sealed Air Corporation

2415 Cascade Pointe Boulevard

Charlotte, North Carolina 28208

Ladies and Gentlemen:

I am the Vice President, General Counsel and Secretary of Sealed Air Corporation, a Delaware corporation (the “Corporation”), and as such have represented the Corporation in connection with a Registration Statement on Form S-8 (the “Registration Statement”) providing for the registration under the Securities Act of 1933, as amended (the “Act”), of 3,507,590 shares (the “Shares”) of the Corporation’s Common Stock, par value $0.10 per share (the “Common Stock”) which may be issued by the Corporation pursuant to the 2014 Omnibus Incentive Plan, as amended and restated effective May 17, 2018, as further amended and restated effective May 18, 2021, and as further amended by the Amendment to the Sealed Air Corporation 2014 Omnibus Incentive Plan (the “Amendment”), effective May 23, 2024 (as so amended and restated and further amended, the “Omnibus Plan”). This opinion is being furnished in connection with the requirements of Item 601(b)(5) of Regulation S-K under the Act, and no opinion is expressed herein as to any matter pertaining to the contents of the Registration Statement or related prospectus, other than as expressly stated herein with respect to the issue of the Shares.

I have confirmed that the authorization of the Shares for issuance under the Omnibus Plan was approved by the board of directors of the Corporation (the “Board of Directors”) (i) with respect to the initial 2014 Omnibus Incentive Plan, on February 18, 2014, which 2014 Omnibus Incentive Plan subsequently was approved by the stockholders of the Corporation (the “Stockholders”) by resolution adopted at the 2014 Annual Meeting held on May 22, 2014, (ii) with respect to the first amendment and restatement of the 2014 Omnibus Incentive Plan, on February 14, 2018, which amendment and restatement subsequently was approved by the Stockholders by resolution adopted at the 2018 Annual Meeting held on May 17, 2018, (iii) with respect to the second amendment and restatement of the 2014 Omnibus Incentive Plan, on March 23, 2021, which amendment and restatement subsequently was approved by the Stockholders by resolution adopted at the 2021 Annual Meeting held on May 18, 2021, and (iv) with respect to the Amendment, on April 3, 2024, which Amendment subsequently was approved by the Stockholders by resolution adopted at the 2024 Annual Meeting held on May 23, 2024. The Board of Directors approved the listing of the Shares on the New York Stock Exchange, the registration of the Shares and the preparation and filing of the Registration Statement on June 13, 2024.

As counsel for the Corporation, in addition to participating in the preparation of the Registration Statement, I have reviewed (a) the Omnibus Plan, (b) the resolutions adopted by the Board of Directors on February 18, 2014 approving and adopting the initial 2014 Omnibus Incentive Plan and authorizing the reservation for issuance of certain of the Shares thereunder, together with a resolution adopted by the Stockholders at the 2014 Annual Meeting approving and adopting the initial 2014 Omnibus Incentive Plan, (c) the resolutions adopted by the Board of Directors on February 14, 2018 approving and adopting the first amendment and restatement of the 2014 Omnibus Incentive Plan and authorizing the reservation for issuance of certain of the Shares thereunder, together with a resolution adopted by the Stockholders at the 2018 Annual Meeting approving the first amendment and restatement of the 2014 Omnibus Incentive Plan, (d) the resolutions adopted by the Board of Directors on March 23, 2021 approving and adopting the second amendment and restatement of the 2014 Omnibus Incentive Plan and authorizing the reservation for issuance of certain of the Shares thereunder, together with a resolution adopted by the Stockholders at the 2021 Annual Meeting approving the second amendment and restatement of the 2014 Omnibus Incentive Plan, (e) the resolutions adopted by the Board of Directors on April 3, 2024 approving and adopting the

Amendment and authorizing the reservation for issuance of certain of the Shares thereunder, together with a resolution adopted by the Stockholders at the 2024 Annual Meeting approving the Amendment, and (f) the resolutions adopted by the Board of Directors on June 13, 2024 approving the listing of the Shares on the New York Stock Exchange, the registration of the Shares and the preparation and filing of the Registration Statement. I have also reviewed such corporate records, documents, instruments and certificates and have made such other inquiries as I have deemed necessary in order to enable me to render this opinion.

As to factual matters, I have relied on originals or copies authenticated to my satisfaction of the documents referred to above and such other documents as I have considered necessary to form a basis for rendering this opinion. In my examination, I have assumed the genuineness of all signatures, the legal capacity and competency of all natural persons, the authenticity of all documents submitted to me as originals and the conformity to original documents of all documents submitted to me as copies, and, to the extent I have received and relied upon certificates of the Corporation or authorized representatives thereof and certificates and assurances from public officials, all of such certificates, representations and assurances are accurate with respect to factual matters.

Based on the foregoing, I am of the opinion that the Shares, when issued and paid for pursuant to the Registration Statement and in accordance with and upon the terms and conditions of the Omnibus Plan, will be legally issued, fully paid and nonassessable shares of Common Stock of the Corporation.

I hereby consent to the filing of this opinion with the Securities and Exchange Commission as Exhibit 5 to the Registration Statement and to the reference to me in Item 5 of the Registration Statement. In giving this consent I do not admit that I am within the category of persons whose consent is required by Section 7 of the Act or the rules and regulations thereunder.

Very truly yours,

/s/ Angel S. Willis

Angel S. Willis

Vice President, General Counsel and Secretary