Exhibit (4)(c)(6)

                              EXTENSION AGREEMENT


     EXTENSION   AGREEMENT,   dated   as   of   January   5,2001,   among   WEST
PHARMACEUTICAL~ SERVICES, INC., a Pennsylvania corporation (the "Company"), the
direct and indirect  subsidiaries  of the Company listed on the signature  pages
hereto (together with the Company,  collectively,  the "Borrowers"), the several
banks and other  financial  institutions  parties  to the Credit  Agreement  (as
hereinafter  defined)  (collectively,  the  "Banks"),  and  PNC  BANK,  NATIONAL
ASSOCIATION, as Agent for the Banks (in such capacity, the "Agent").

                                   WITNESETH:


     WHEREAS,  the  Borrowers,  the Banks and the Agent are  parties to a Credit
Agreement,  dated as of July 26, 2000 (as heretofore  amended,  supplemented  or
otherwise modified, the "Credit Agreement");

     WHEREAS, pursuant to Section 5.9 of the Credit Agreement, the Borrowers are
required within one hundred and sixty-five  (165) days after the Closing Date to
cause  certain of their  Subsidiaries  to become  co-borrowers  under the Credit
Agreement;

     WHEREAS,  the  Borrowers  have  requested  that the Banks  amend the Credit
Agreement to extend the one hundred and sixty-five-day period to two hundred and
ten days; and

     WHEREAS,  the  Required  Banks  have  agreed  to  do so on  the  terms  and
conditions set forth herein.

     NOW,   THEREFORE,   in   consideration  of  the  foregoing  and  for  other
consideration,  the receipt and sufficiency of which is hereby acknowledged, the
parties hereto, intending to be legally bound, hereby agree as follows:


     1. Defined Terms.  Unless  otherwise  defined herein,  terms defined in the
Credit Agreement are used herein as therein defined.

     2. Amendment to Section 5.9 (Notice and Joinder of New  Subsidiaries).  The
second  sentence of Section  5.9 of the Credit  Agreement  is hereby  amended by
deleting  the phrase "one  hundred and  sixty-five  (165) days after the Closing
Date" and  inserting  in lieu thereof the phrase "two hundred and ten (210) days
after the Closing Date".

     3.  Representations  and  Warranties.  The Borrowers  hereby  represent and
warrant to the Banks and the Agent that:

          (a) There  exists no  Default  or Event of  Default  under the  Credit
     Agreement as amended hereby;

          (b) The  representations  and warranties made in the Credit  Agreement
     are true and correct in all material  respects on and as of the date hereof
     as if made on and as of the date hereof; and

          (c) The execution  and delivery of this  Agreement by and on behalf of
     the Borrowers has been duly authorized by all requisite action on behalf of
     the Borrowers and this Agreement  constitutes the legal,  valid and binding
     obligation of the Borrowers,  enforceable  against them in accordance  with
     its  terms,   except  as  enforceability   may  be  limited  by  applicable
     bankruptcy, insolvency, fraudulent conveyance,  reorganization,  moratorium
     or similar laws affecting the  enforcement of creditors'  rights  generally
     and by  general  equitable  principles  (whether  enforcement  is sought by
     proceedings in equity or at law).


     4.  Effectiveness.  This  Agreement  shall become  effective upon the Agent
receiving  counterparts  hereof duly  executed by the Borrowers and the Required
Banks.

     5. Limited  Effect.  Except as  expressly  amended by this  Agreement,  the
Credit  Agreement shall continue to be, and shall remain,  unaltered and in full
force and effect in accordance  with its terms and the Borrowers  hereby confirm
all of the provisions of the Credit Agreement and the other Loan Documents.

     6. Release.  Recognizing and in consideration of the Banks' and the Agent's
agreement to the  amendments  set forth  herein,  each of the  Borrowers  hereby
waives  and  releases  the Banks and the  Agent and their  officers,  attorneys,
agents, and employees from any liability,  suit, damage,  claim, loss or expense
of any kind or nature  whatsoever and howsoever  arising that such Borrower ever
had or now has against  any of them  arising out of or relating to any Bank's or
the  Agent's  acts or  omissions  with  respect  to this  Agreement,  the Credit
Agreement,  the other Loan Documents or any other matters  described or referred
to herein or therein.

     7. Miscellaneous.

          (a) Expenses.  Each of the Borrowers  agrees to pay all of the Agent's
     reasonable   out-of-pocket   expenses   incurred  in  connection  with  the
     preparation, negotiation and execution of this Agreement including, without
     limitation,  the  reasonable  fees and expenses of Ballard  Spahr Andrews &
     Ingersoll, LLP.

          (b) Governing Law. This  Agreement  shall be governed by and construed
     in accordance with the laws of the Commonwealth of Pennsylvania.

          (c) Successor and Assigns.  The terms and provisions of this Agreement
     shall be binding upon and shall inure to the benefit of the Borrowers,  the
     Agent and the Banks and their respective successors and assigns.

          (d)  Counterparts.  This  Agreement  may be  executed  in one or  more
     counterparts,  each of which shall be deemed to be an original,  and all of
     which shall constitute one and the same instrument.

          (e) Headings.  The headings of any paragraph of this Agreement are for
     convenience only and shall not be used to interpret any provision hereof.

          (f) Modifications. No modification hereof or any agreement referred to
     herein  shall be binding  or  enforceable  unless in writing  and signed on
     behalf of the party against whom enforcement is sought.


     IN WITNESS  WHEREOF,  the parties  hereto have caused this  Agreement to be
duly executed and delivered by their proper and duly  authorized  officers as of
the day and year first above written.


                                        WEST PHARMACEUTICAL SERVICES, INC.

                                        By:    /s/ Stephen M. Heumann
                                        Name:      Stephen M. Heumann
                                        Title:     Vice President




                                        WEST PHARMACEUTICAL SERVICES
                                        OF FLORIDA, INC.


                                        By:    /s/ Stephen M. Heumann
                                        Name:      Stephen M. Heumann
                                        Title:     Vice President



                                        WEST PHARMACEUTICAL SERVICES
                                        LAKEWOOD, INC.

                                        By:    /s/ Stephen M. Heumann
                                        Name:      Stephen M. Heumann
                                        Title:     Vice President



                                        WEST PHARMACEUTICAL SERVICES
                                        GROUP LIMITED

                                        By:   /s/ John R. Gailey III
                                        Name:     John R. Gailey III
                                        Title:    Director




                                        PNC BANK, NATIONAL ASSOCIATION,
                                        as a Bank and as Agent

                                        By:
                                        Name:
                                        Title:




                                        FIRST UNION NATIONAL BANK, as a Bank

                                        By:
                                        Name:
                                        Title:




                                        DRESDNER BANK, AG, NEW YORK AND
                                        GRAND CAYMAN BRANCHES, as a Bank

                                        By:
                                        Name:
                                        Title:


                                        By:
                                        Name:
                                        Title:


                                        WEST PHARMACEUTICAL SERVICES
                                        GROUP LIMITED

                                        By:
                                        Name:
                                        Title:



                                        PNC BANK NATIONAL ASSOCIATION,
                                        as a Bank and as Agent

                                        By:   /s/ Amy T. Peterson
                                        Name:     Amy T. Peterson
                                        Title:    Vice President




                                        FIRST UNION NATIONAL BANK, as a Bank

                                        By:
                                        Name:
                                        Title:



                                        DRESDNER BANK, AG, NEW YORK AND
                                        GRAND CAYMAN BRANCHES, as a Bank


                                        By:
                                        Name:
                                        Title:


                                        By:
                                        Name:
                                        Title:



                                        WEST PHARMACEUTICAL SERVICES
                                        GROUP LIMITED

                                        By:
                                        Name:
                                        Title:



                                        PNC BANK, NATIONAL ASSOCIATION,
                                        as a Bank and as Agent


                                        By:
                                        Name:
                                        Title:



                                        FIRST UNION NATIONAL BANK, as a Bank

                                        By:    /s/ Constantin E. Chepurny
                                        Name:      Constantin E. Chepurny
                                        Title:     Senior Vice President



                                        DRESDNER BANK, AG, NEW YORK AND
                                        GRAND CAYMAN BRANCHES, as a Bank

                                        By:
                                        Name:
                                        Title:


                                        By:
                                        Name:
                                        Title:




                                      WEST PHARMACEUTICAL SERVICES GROUP LIMITED


                                      By:
                                      Name:
                                      Title:




                                      PNC BANK, NATIONAL ASSOCIATION,
                                      as a Bank and as Agent


                                      By:
                                      Name:
                                      Title:




                                      FIRST UNION NATIONAL BANK, as a Bank

                                      By:
                                      Name:
                                      Title:



                                      DRESDNER BANK, AG, NEW YORK AN])
                                      GRAND CAYMAN BRANCHES, as a Bank

                                      By:    /s/ Richard Morris
                                      Name:      Richard Morris
                                      Title:     Senior Vice President


                                      By:    /s/ Deborah Carlson
                                      Name:      Deborah Carlson
                                      Title:     First Vice President




                                      NATIONAL CITY BANK, as a Bank

                                      By:  /s/ Thomas J. McDonnell
                                      Name:    Thomas J. McDonnell
                                      Title:   Senior Vice President




                                      THE CHASE MANHATTAN BANK,
                                      as a Bank


                                      By:
                                      Name:
                                      Title:




                                      MELLON BANK, NA., as a Bank

                                      By:
                                      Name:
                                      Title:





                                      NATIONAL CITY BANK as a Bank

                                      By:
                                      Name:
                                      Title:




                                      THE CHASE MANHATTAN BANK
                                      as a Bank


                                      By:
                                      Name:
                                      Title:





                                      MELLON BANK NA., as a Bank


                                      By:   /s/ Mark W. Torie
                                      Name:     Mark W. Torie
                                      Title:    VP