EXHIBIT 5.1

October 10, 2001

Board of Directors
37 Ironia Road
Flanders, NJ 07836

R-Tec Technologies, Inc., a New Jersey corporation (the "Company") has informed
me of its intention to file a registration statement on Form S-8 under the
Securities Act of 1933, as amended ("Registration Statement") concerning four
hundred and seventy thousand (470,000) shares (the "Shares") of its common
stock, par value $.00001, with the Securities and Exchange Commission ("SEC").
In connection with the filing of the registration statement, you have requested
my opinion regarding the issuance of the shares. You have represented to me that
the Company is subject to the reporting requirements of Section 13 or 15(d) of
the Securities Exchange Act of 1934, as amended, that the Company is current in
filing all required reports with the SEC and that the Company's Board of
Directors has authorized the filing of the Registration Statement on Form S-8.
Based on these representations and to the best of my knowledge, I am of the
opinion that Form S-8 is a form of registration available to the Company as of
the date of this letter. This opinion is conditioned upon the accuracy of the
foregoing representations of the Company.

It is also my opinion that the Board of Directors has duly and properly
authorized the issuance of up to 470,000 of the Company's common shares pursuant
to the Consulting Agreements, which are the subject of the registration
statement. Based thereon, and the fact that the number of shares to be issued
pursuant to the contract is within the authorized but unissued common stock of
the Company, the shares, when issued, will be validly authorized and issued,
fully paid and non-assessable common shares of the Company.

The opinions set forth above are predicated upon and limited to the correctness
of the assumptions set forth herein, and are further subject to qualifications,
exceptions and limitations set forth below:

A.    In rendering these opinions, I have assumed that the Company is satisfying
      the various substantive requirements of Form S-8. I expressly disclaim any
      opinion regarding the Company's compliance with such requirements.

B.    I expressly except from the opinions set forth herein any opinion
      concerning the need for compliance by any party, specifically the Company,
      with provisions of the securities laws, regulations, and/or rules of the
      United States of America, the State of New Jersey, or any other
      jurisdiction.

C.    In expressing the opinions set forth herein, I have assumed the
      authenticity, accuracy and completeness of all corporate documents,
      records and instruments provided to me by the Company and its
      representatives. I have also assumed the accuracy of all statements of
      fact contained therein. I have assumed the genuineness of signatures, the
      authenticity of documents submitted as originals, the conformity to the
      originals of all copies or faxed copies, and the correctness of all such
      documents, specifically including all reports filed by R-Tec under the
      Securities Exchange Act of 1934.
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D.    I expressly except from this opinion any opinion concerning the propriety
      of any issuance of shares, or the consideration tendered for such shares,
      and any opinion concerning the tradeability of any shares whether or not
      issued under the registration statement.

E.    This opinion does not contain, and may not be construed to contain the
      expression of any opinion as to whether (a) the Plan described in the
      registration statement is covered by the Employee Retirement Income
      Security Act of 1974 ("ERISA") or whether the plan is qualified under
      Section 401(a) of the Internal Revenue Code.

F.    The opinions contained herein are rendered as of the date hereof, and I
      undertake no obligation to advise of any changes in or any new
      developments which might affect any matters or opinions set fort herein,
      and I hereby specifically disclaim any such obligations.

This opinion may be relied upon by you only in connection with filing of the
registration statement, and I hereby consent to the use of it as an exhibit to
the registration statement. This opinion may not be used or relied upon by you
or any other person for any purchase whatsoever, without in each instance, my
prior written consent.

Very truly yours,

Jack H. Halperin