<PAGE>   1
                                                                   EXHIBIT 10.18


                            NON-COMPETITION AGREEMENT

                  This Non-Competition Agreement (this "Agreement") dated May
31, 2000 is made and entered into by and among Medical Device Manufacturing,
Inc., d/b/a Rivo Technologies, a Colorado corporation ("MDMI"), UTI Corporation,
a Pennsylvania corporation ("UTI"), and Jeffrey M. Farina ("Farina").

                                   WITNESSETH:

                  WHEREAS, UTI Acquisition Corp., a Colorado corporation and
wholly-owned subsidiary of MDMI has entered into that certain Share Purchase
Agreement, dated May 31, 2000 (the "Purchase Agreement"), by and among UTI
Acquisition Corp., UTI, Farina and the other shareholders of UTI (Farina,
together with the other shareholders of UTI, the "Sellers"), pursuant to which
UTI Acquisition Corp. is purchasing from the Sellers all of the outstanding
capital stock of UTI;

                  WHEREAS, UTI Acquisition Corp. is unwilling to proceed with
the transactions contemplated by the Purchase Agreement (the "Purchase") unless
Farina agrees to refrain from engaging in certain activities described herein,
and UTI Acquisition Corp. has conditioned its commitment to proceed with the
transactions under the Purchase Agreement upon the receipt of this duly executed
Agreement from Farina.

                  NOW THEREFORE, in consideration of the mutual promises and
covenants contained herein, the agreement of UTI Acquisition Corp. to consummate
the Purchase, and other good and valuable consideration, the receipt and
sufficiency of which is hereby acknowledged, MDMI, and Farina agree as follows:

                  1. Non-Competition Commitment.

                           (a) Agreement Not to Compete. Farina agrees that,
during the Non-Competition Period (as defined below), Farina shall not, directly
or indirectly, through an Affiliate (as defined below) or otherwise, either for
the benefit of himself or for the benefit of any other person, firm,
corporation, governmental or private entity, or any other entity of any kind,
without the prior written consent of MDMI and UTI, which consent may be withheld
by MDMI or UTI, in its sole discretion, compete with MDMI, UTI or any Affiliate
of either MDMI or UTI in any manner or capacity (e.g., through any form of
ownership or as an advisor, principal, agent, consultant, partner, joint
venturer, officer, director, stockholder, employee, member of any association or
otherwise) in any phase of the business that MDMI, UTI or any Affiliate of
either MDMI or UTI is conducting during the term of this Agreement or has
specific plans of which Farina is aware to conduct business within the
geographical area described in Section 1(b) below that (i) is related to,
similar to or substantially equivalent to Farina's capacity with MDMI, UTI or
any Affiliate of either MDMI or UTI, as applicable or (ii) would permit or
require Farina to direct, control or have substantial input into the strategy,
marketing or operations of an entity competing with or seeking to compete with
MDMI, UTI or any Affiliate of either MDMI or UTI. Notwithstanding the foregoing,
Farina may provide services to eVasc, L.P. ("eVasc") without




                                      -1-
<PAGE>   2

violating the terms of this Agreement, provided that such services are performed
in accordance with the provisions of Section 3 of that certain License and
Technical Assistance Agreement between UTI and eVasc, as amended from time to
time, ("License Agreement") and are charged for and billed by UTI in accordance
with Section 4 of the License Agreement. For purposes of this Agreement, (i)
"Affiliate" of a person or entity means any person or entity controlled by,
controlling or under common control with such person or entity; provided,
however, that for purposes of this Agreement, Farina and MDMI shall not be
considered Affiliates of each other, (ii) "Control" including the correlated
terms "controlling," "controlled by" and "under common control with," shall mean
possession, directly or indirectly, of the power to direct or cause the
direction of management or powers whether through ownership of securities or any
partnership or other ownership interest, by contract or otherwise, of a person
or entity and (iii) "Non-Competition Period" shall mean the later of (X) five
(5) years after the date of this Agreement or (Y) one (1) year after the
termination of Farina's employment, if any, with MDMI, UTI or any of their
Affiliates (or other arrangement pursuant to which Farina provides services to
MDMI, UTI or any of their Affiliates); provided, however, that in the event
Farina is terminated without Cause or terminates his employment with Good Reason
(as Cause and Good Reason are defined in that certain Employment Agreement of
even date herewith among Farina, UTI and MDMI), the Non-Competition Period shall
be one (1) year following the date of termination; provided, further, that such
Non-Competition Period may be extended beyond that one (1) year period at MDMI's
sole option for up to four (4) successive six (6) month periods if prior to the
applicable extension period MDMI pays Farina a lump sum payment in an amount
equal to six (6) months of Farina's base salary as such base salary was in
effect at the time of Farina's termination.

                  (b) Geographic Extent of Covenant. The obligations of Farina
under Section 1(a) shall apply to any geographic area in which MDMI, UTI or any
Affiliate of either MDMI or UTI currently conducts, or at the time of
termination or expiration of Farina's employment, if any, with MDMI, UTI or any
Affiliate of either MDMI or UTI, conducts or has specific plans of which Farina
is aware to conduct business or provide services. Farina hereby acknowledges
that the geographic boundaries, scope of prohibited activities and the time
duration of the provisions of this Section 1 are reasonable and are no broader
than necessary to protect the legitimate business interests of MDMI and UTI,
including, without limitation, the ability of MDMI to realize the benefit of its
bargain and enjoy the goodwill of UTI.

                  (c) Indirect Competition. Farina further agrees that, during
the Non-Competition Agreement, he will not, knowingly directly or indirectly,
assist or encourage any other person in carrying out, directly or indirectly,
any activity that would be prohibited by the foregoing provisions of this
Section 1 if such activity were carried out by Farina, either directly or
indirectly.

                  (d) Limitation on Covenant. Ownership by Farina, as a passive
investment, of less than one percent (1%) of the outstanding shares of capital
stock, outstanding debt instruments or other securities convertible into capital
stock or debt instruments of any corporation listed on a national securities
exchange or publicly traded on any nationally recognized over-the-counter market
shall not constitute a breach of this Section 1.



                                      -2-
<PAGE>   3

                  2. No Interference; Nonsolicitation. During the
Non-Competition Period, Farina agrees that he shall not take any action to
interfere with the relationships between MDMI, UTI or any Affiliate of either
MDMI or UTI, and their respective suppliers or customers, including, without
limitation, former customers of UTI. During the Non-Competition Period, Farina
agrees that he shall not, directly or indirectly through another entity, (a)
induce or attempt to induce any employee or independent contractor of MDMI, UTI
or any Affiliate of either MDMI or UTI to leave the employ of MDMI, UTI or any
Affiliate of either MDMI or UTI, as applicable, (b) hire any person who was an
employee or independent contractor of MDMI, UTI or any Affiliate of either MDMI
or UTI if such person was employed by MDMI, UTI or any Affiliate of either MDMI
or UTI at any time during the one-year period prior to such hiring or (c) induce
or attempt to induce any customer, supplier, licensee or other business relation
of MDMI, UTI or any Affiliate of either MDMI or UTI to withdraw, curtail or
cease doing business with MDMI, UTI or any Affiliate of either MDMI or UTI, as
applicable.

                  3. Confidential Information.

                  (a) Except as permitted or directed by MDMI's Board of
Directors or UTI's Board of Directors, Farina agrees not to divulge, furnish or
make accessible to anyone or use in any way (other than in connection with and
in furtherance of Farina's work on behalf of UTI or MDMI) any confidential or
secret knowledge or nonpublic information of MDMI, UTI or any Affiliate of
either MDMI or UTI that Farina has acquired or become acquainted with prior to
the date of this Agreement, whether developed by Farina or by others, concerning
any trade secrets, confidential or secret designs, processes, formulae, plans,
devices or material (whether or not patented or patentable) directly or
indirectly useful in any aspect of the business of MDMI, UTI or any Affiliate of
either MDMI or UTI, any customer or supplier lists, details of relationships
with customers, vendors, distributors or suppliers, financial information,
details of operation, organization and management, business plans and
strategies, information about employees and agents of MDMI, UTI or any Affiliate
of either MDMI or UTI, any confidential or secret development or research work
of MDMI, UTI or any Affiliate of either MDMI or UTI, any analyses, records or
date generated from any such information of MDMI, UTI or any Affiliate of either
MDMI or UTI, or any other confidential information or secret aspects of the
business of MDMI, UTI or any Affiliate of either MDMI or UTI (collectively,
"Confidential Information"). This Agreement shall not prohibit Farina from
complying with any subpoena or court order, provided that Farina shall at the
earliest practicable date provide a copy of the subpoena or court order to the
President of MDMI, UTI or any Affiliate of either MDMI or UTI, as applicable, it
being the parties' intention to give MDMI, UTI or any Affiliate of either MDMI
or UTI a fair opportunity to take appropriate steps to prevent the unnecessary
and/or improper use or disclosure of Confidential Information, as determined by
MDMI, UTI or any Affiliate of either MDMI or UTI in its reasonable judgment.

                  (b) Farina acknowledges that the Confidential Information
constitutes a unique and valuable asset of MDMI and/or UTI, represents a
substantial investment of time and expense by MDMI or UTI, as applicable, would
be susceptible to immediate competitive application by a competitor of MDMI or
UTI and that any disclosure or other use of such Confidential Information other
than for the sole benefit of MDMI and/or UTI would be wrong


                                      -3-
<PAGE>   4


and would cause irreparable harm to MDMI and/or UTI. Farina agrees to refrain
from any acts or omissions that would reduce the value of such Confidential
Information to MDMI, UTI or any Affiliate of either MDMI or UTI. The foregoing
obligations of confidentiality shall not apply to any Confidential Information
that subsequently becomes generally publicly known in the form in which it was
obtained from MDMI, UTI or any Affiliate of either MDMI or UTI, other than as a
direct or indirect result of the breach of this Agreement by Farina.

                  (c) Records Containing Confidential Information. "Confidential
Records" means all documents and other records, whether in paper, electronic or
other form, that contain or reflect Confidential Information. All Confidential
Records prepared by or provided to Farina are and shall remain the property of
MDMI, UTI or any Affiliate of either MDMI or UTI. Except as permitted or
directed by MDMI's Board of Directors or UTI's Board of Directors, Farina shall
not, at any time, directly or indirectly: (i) copy or use any Confidential
Record for any purpose not relating directly to Farina's work for MDMI, UTI or
any Affiliate of either MDMI or UTI; or (ii) show, give, sell, disclose or
otherwise communicate any Confidential Record or the contents of any
Confidential Record to any person or entity other than MDMI, UTI or any
Affiliate of either MDMI or UTI or a person or entity authorized by MDMI, UTI or
any Affiliate of either MDMI or UTI, as applicable, to have access to the
Confidential Record in question. Upon the termination of Farina's employment, if
any, with MDMI, UTI or any Affiliate of either MDMI or UTI, or upon the request
of MDMI, UTI or any Affiliate of either MDMI or UTI, Farina shall immediately
deliver to the designated person (and shall not keep in Farina's possession or
deliver to any other person or entity) all Confidential Records and all other
property of MDMI, UTI or any Affiliate of either MDMI or UTI in Farina's
possession or control. This Agreement shall not prohibit Farina from complying
with any subpoena or court order, provided that Farina shall at the earliest
practicable date provide a copy of the subpoena or court order to the President
of MDMI, UTI or any Affiliate of either MDMI or UTI, as applicable, it being the
parties' intention to give MDMI, UTI or any Affiliate of either MDMI or UTI a
fair opportunity to take appropriate steps to prevent the unnecessary and/or
improper use or disclosure of Confidential Records, as determined by MDMI, UTI
or any Affiliate of either MDMI or UTI in its reasonable judgment.

                  (d) Third-Parties' Confidential Information. Farina
acknowledges that MDMI, UTI or any Affiliate of either MDMI or UTI have received
and in the future will receive from third parties confidential or proprietary
information, and that MDMI, UTI or any Affiliate of either MDMI or UTI must
maintain the confidentiality of such information and use it only for authorized
purposes. Farina shall not use or disclose any such information except as
authorized by MDMI, UTI or any Affiliate of either MDMI or UTI, as applicable or
the third party to whom the information belongs.

                  4. Severability Provision. To the extent that any provision of
this Agreement shall be determined to be invalid or unenforceable, such
provision shall be deleted from this Agreement, and the validity and
enforceability of the remainder of this Agreement shall be unaffected. In
furtherance of and not in limitation of the foregoing, it is expressly agreed
that, should the duration or geographical extent of, or business activities
covered by, this Agreement be finally determined to be in excess of that which
is valid or enforceable under applicable law, such provision shall be construed
to cover the maximum duration, extent or activities which may


                                      -4-
<PAGE>   5

be validly or enforceably covered. Farina acknowledges the uncertainty of the
law in this respect and expressly stipulates that this Agreement shall be
construed in a manner which renders its provisions valid and enforceable to the
maximum extent (not exceeding its express terms) possible under applicable law.

                  5. Remedies. Farina acknowledges that it would be difficult to
fully compensate MDMI and UTI for damages resulting from any breach by such
party of the provisions of this Agreement. Accordingly, in the event of any
actual or threatened breach of such provisions, MDMI and UTI shall (in addition
to any other remedies which it may have) be entitled to temporary and/or
permanent injunctive relief to enforce such provisions, and such relief may be
granted without the necessity of proving actual damages. Farina further
acknowledges that this Agreement constitutes a material inducement to MDMI to
consummate the transactions contemplated by the Purchase Agreement and that MDMI
will be relying on the enforceability of this Agreement in consummating the
transactions contemplated under the Purchase Agreement.

                  6. Remedies Cumulative. No remedy conferred by any of the
specific provisions of this Agreement is intended to be exclusive of any other
remedy, and each and every remedy shall be cumulative and shall be in addition
to every other remedy given hereunder or now or hereafter existing at law or in
equity or by statute or otherwise. The election of any one or more remedies by
any party hereto shall not constitute a waiver of the right to pursue other
available remedies.

                  7. Complete Agreement. This Agreement and that certain
Employment Agreement among Farina, UTI and MDMI of even date herewith together
constitute the entire agreement, and supersede all other prior and
contemporaneous agreements and undertakings, both written and oral, among the
parties hereto relating to the subject matter hereof. There are no
representations, warranties, covenants, statements, conditions, terms or
obligations, other than those contained herein, relating to the subject matter
hereof. No amendments or modifications to or variations of this Agreement shall
be deemed valid unless in writing and executed by MDMI, UTI and Farina.

                  8. Governing Law. This Agreement shall be construed and
enforced in accordance with the internal laws of the Commonwealth of
Pennsylvania, without regard to conflicts of law principles.

                  9. Venue. Any action at law, suit in equity or judicial
proceeding arising directly, indirectly, or otherwise in connection with, out
of, related to or from this Agreement, or any provision hereof, shall be
litigated only in the state or federal courts located in Philadelphia County,
Pennsylvania. Farina hereby consents to the jurisdiction of such courts and
waives any right to transfer or change the venue of any litigation brought
against Farina by MDMI or UTI.

                  10. Assignment. Farina may not assign this Agreement. The
rights of MDMI and UTI under this Agreement may be assigned to any third party
who succeeds to either MDMI's or UTI's business, as applicable.




                                      -5-
<PAGE>   6

                  11. Successors and Assigns. This Agreement shall be binding
upon and inure to the benefit of the parties hereto and their respective heirs
and personal representatives and, to the extent permitted by Section 10, their
respective successors and assigns.

                  12. Counterparts. This Agreement may be executed in two or
more counterparts, each of which shall be deemed an original, but all of such
counterparts shall together constitute a single agreement.

                  13. Headings. Section headings contained in this Agreement are
inserted for convenience of reference only, shall not be deemed to be a part of
this Agreement for any purpose, and shall not in any way define or affect the
meaning, construction or scope of any of the provisions hereof.


                            [Signature Page follows]





                                      -6-
<PAGE>   7



                  IN WITNESS WHEREOF, the parties hereto have each executed this
Agreement as of the date first written above.



                                  MEDICAL DEVICE MANUFACTURING, INC.

                                  By: /s/ ERIC M. POLLOCK
                                     ------------------------------------------
                                  Name: Eric M. Pollock
                                  Title: President & Chief Executive Officer


                                  UTI CORPORATION

                                  By: /s/ STEVEN D. NEUMANN
                                     ------------------------------------------
                                  Name: Steven D. Neumann
                                  Title: Vice President & Assistant Secretary



                                  /s/ JEFFREY M. FARINA
                                  ----------------------------------------------
                                  JEFFREY M. FARINA



[signature page to Farina Non-Competition Agreement]



                                      -7-