Exhibit 5.1 AKIN, GUMP, STRAUSS, HAUER & FELD, L.L.P. ATTORNEYS AT LAW A REGISTERED LIMITED LIABILITY PARTNERSHIP INCLUDING PROFESSIONAL CORPORATIONS AUSTIN BRUSSELS 590 MADISON AVENUE DALLAS 20TH FLOOR HOUSTON NEW YORK, NY 10022 LONDON (212) 872-1000 LOS ANGELES FAX (212) 872-1002 MOSCOW NEW YORK Stephen E. Older PHILADELPHIA solder@akingump.com SAN ANTONIO Direct Dial (212) 872-1068 WASHINGTON, D.C. April 25, 2002 RBX Corporation 5221 ValleyPark Drive Roanoke, Virginia 24019 Re: RBX Corporation, Registration Statement Form S-1 (Registration No. 333-82630) Ladies and Gentlemen: We have acted as special counsel to RBX Corporation, a Delaware corporation (the "Company") and RBX Industries, Inc., a Delaware corporation (the "Guarantor" and together with the Company, the "Registrants"), in connection with the registration, pursuant to a registration statement on Form S-1, as amended (the "Registration Statement"), filed with the Securities and Exchange Commission under the Securities Act of 1933, as amended (the "Act"), of the offering and sale by the selling holders listed in the Registration Statement of up to 635,576 shares (the "Shares") of the Company's common stock, par value $0.001 per share ("Common Stock"), warrants to purchase up to 11,563 shares of Common Stock (the "Warrants") issued pursuant to a Warrant Agreement, dated August 27, 2001 (the "Warrant Agreement"), entered into by the Company and The Bank of New York, as Warrant Agent, 11,563 shares of Common Stock underlying the Warrants (the "Warrant Shares") and up to $16,500,000 aggregate principal amount of the Company's 12% Senior Secured Notes due 2006 (the "Notes") guaranteed by the Guarantor (the "Guarantee") and issued under an Indenture, dated as of August 27, 2001 (the "Indenture"), entered into by the Company and State Street Bank and Trust Company, as Trustee. The Shares, the Warrants, the Warrant Shares and the Notes are collectively referred to as the "Securities". We have examined originals or certified copies of such corporate records of the Registrants and other certificates and documents of officials of the Registrants, public officials and others as we have deemed appropriate for purposes of this letter. We have assumed the genuineness of all signatures, the authenticity of all documents submitted to us as originals, the conformity to authentic original documents of all copies submitted to us as conformed and certified or reproduced copies. RBX Corporation April 25, 2002 Page 2 Based upon the foregoing and subject to the assumptions, exceptions, qualifications and limitations set forth hereinafter, we are of the opinion that: 1. The Shares and Warrants have been duly authorized and validly issued and are fully paid and nonassessable. 2. The Warrant Shares have been duly authorized and, when issued, delivered and paid for in accordance with the Warrant Agreement, the Warrant Shares will be validly issued, fully paid and nonassessable. 3. The Notes have been duly authorized and are valid and binding obligations of the Company, enforceable against it in accordance with their terms and are entitled to the benefits of the Indenture. 4. The Guarantee has been duly authorized by the Guarantor and is the valid and binding obligations of the Guarantor, enforceable against it in accordance with its terms. The opinions and other matters in this letter are qualified in their entirety and subject to the following: A. We express no opinion as to the laws of any jurisdiction other than any published constitutions, treaties, laws, rules or regulations or judicial or administrative decisions ("Laws") of New York, the General Corporation Law of the State of Delaware and the federal laws of the United States of America. B. This law firm is a registered limited liability partnership organized under the laws of the State of Texas. C. This opinion is limited to the matters stated herein, and no opinion is implied or may be inferred beyond the matters expressly stated. We assume herein no obligation, and hereby disclaim any obligation, to make any inquiry after the date hereof or to advise you or any future changes in the foregoing or of any fact or circumstances that may hereafter come to our attention. D. The matters expressed in this letter are subject to and qualified and limited by (i) applicable bankruptcy, insolvency, fraudulent transfer and conveyance, reorganization, moratorium and similar laws affecting creditors' rights and remedies generally; and (ii) general principles of equity, including principles of commercial reasonableness, good faith and fair dealing (regardless of whether enforcement is sought in a proceeding at law or in equity); (iii) commercial reasonableness and unconscionability and an implied covenant of good faith and fair dealing; (iv) the power of the courts to award damages in lieu of equitable remedies; and (v) securities Laws and public policy underlying such Laws with respect to rights to indemnification and contribution . RBX Corporation April 25, 2002 Page 3 We hereby consent to the filing of this opinion as an exhibit to the Registration Statement and to the use of our name in the Prospectus forming a part of the Registration Statement under the caption "Legal Matters". In giving this consent, we do not thereby admit that we are within the category of persons whose consent is required under Section 7 of the Act and the rules and regulations thereunder. We also consent to your filing copies of this opinion as an exhibit to the Registration Statement. Very truly yours, /s/ Akin, Gump, Strauss, Hauer & Feld, L.L.P. AKIN, GUMP, STRAUSS, HAUER & FELD, L.L.P.