SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 8-K

                                 Current Report
     Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

          Date of Report (Date of earliest event reported): May 7, 1998

                          HELIX TECHNOLOGY CORPORATION
             (Exact name of registrant as specified in its charter)

                                    DELAWARE
                 (State or other jurisdiction of incorporation)

                      0-6866                           04-2423640
              (Commission File No.)      (I.R.S. Employer Identification No.)

           Mansfield Corporate Center
                Nine Hampshire Street
              Mansfield, Massachusetts                 02048-9171
     (Address of Principal Executive Offices)          (Zip Code)

        REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE (508) 337-5111

                                      N.A.

          (FORMER NAME OR FORMER ADDRESS, IF CHANGED SINCE LAST REPORT)

ITEM 2.  ACQUISITION OR DISPOSITION OF ASSETS.

On April 16, 1998,  Helix Technology  Corporation  (the  "Company"),  a Delaware
Corporation, signed an Agreement and Plan of Merger (the "Agreement") to acquire
all of the issued and outstanding shares of capital stock of  Granville-Phillips
Company ("Granville-Phillips"),  a Washington Corporation,  pursuant to a merger
of Helix  Acquisition  Corporation,  a Delaware  corporation  and  wholly  owned
subsidiary of the Company, with and into Granville-Phillips (the "Merger"), with
Granville-Phillips   becoming  the  surviving   corporation   and  wholly  owned
subsidiary   of  the  Company.   The  Merger  was  completed  on  May  7,  1998.
Granville-Phillips  is a Boulder,  Colorado based company  recognized as a world
class leader in the development and  manufacture of  instrumentation  for vacuum
measurement and control.  Granville-Phillips'  products are used  principally in
semiconductor, flat panel display, and disk drive manufacturing processes.




ITEM 2.  ACQUISITION OR DISPOSITION OF ASSETS (Continued).


The terms of the  Agreement,  including  the merger  ratio,  were the results of
arm's length  negotiations  between Helix and  Granville-Phillips.  Helix issued
2,382,905 shares of common stock, par value $1.00 per share, to the stockholders
of  Granville-Phillips.  The  transaction  will be accounted for as a pooling of
interests.

Under the terms of the  Agreement,  an  aggregate  of 119,145  of the  Company's
shares of common  stock will be held in escrow with the purpose of  indemnifying
the  Company  against  certain   liabilities  of   Granville-Phillips   and  its
stockholders.  The escrow agreement expires on the earlier of (i) May 7, 1999 or
(ii) completion of the next audited financial statements of the Company.

The preceding discussion is only a summary and is qualified in its entirety,  by
reference to the  agreements,  copies of which are included as Exhibits 2.1, 2.2
and 2.3 to this Current Report on Form 8-K and are filed herewith.


ITEM 7.  FINANCIAL STATEMENTS AND EXHIBITS.

(a)    FINANCIAL STATEMENTS OF BUSINESS ACQUIRED

       Pursuant  to the  instructions  to  Item 7 of  Form  8-K,  the  financial
       information  required by Item 7(a) will be filed by  amendment  within 60
       days of the date of this filing.

(b)    PRO FORMA FINANCIAL INFORMATION

       Pursuant  to the  instructions  to  Item 7 of  Form  8-K,  the  financial
       information  required by Item 7(b) will be filed by  amendment  within 60
       days of the date of this filing.








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(c)    EXHIBITS

       2.1      Agreement  and Plan of Merger  dated as of April 16,  1998 among
                Helix Technology  Corporation,  Helix  Acquisition  Corporation,
                Granville-Phillips Company and Certain Principal Stockholders of
                Granville-Phillips   Company  Named  Herein.   Filed   herewith.
                Pursuant to Item 602(b)(2) of Regulation  S-K, the schedules and
                certain  exhibits  to the  Agreement  and  Plan  of  Merger  are
                omitted.  A list of such  schedules  and exhibits  appear in the
                table of  contents  to the  Agreement  and Plan of  Merger.  The
                Registrant hereby undertakes to furnish supplementally a copy of
                any omitted schedule or exhibit to the Commission upon request.

       2.2      Registration Rights Agreement dated May 7, 1998. Filed herewith.

       2.3      Escrow Agreement dated May 7, 1998. Filed herewith.

       3.1      Restated  Certificate of Incorporation  dated February 15, 1980,
                as amended  on May 5, 1987;  May 18,  1988;  April 20,  1995 and
                April 30, 1998. Filed herewith.


                                   SIGNATURES

Pursuant to the  requirements  of the  Securities  and Exchange Act of 1934, the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.


                                             HELIX TECHNOLOGY CORPORATION



May 15, 1998                          BY:    /s/Michael El-Hillow
- --------------                               ----------------------------
Date                                         Michael El-Hillow
                                             Senior Vice President and
                                             Chief Financial Officer





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