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                      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): January 21, 1998

                              IDEX Corporation
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            (Exact name of registrant as specified in its charter)


          Delaware                     1-10235                  36-3555336
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(State or other jurisdiction)     (Commission File           (I.R.S. Employer
                                      Number)                  Identification
                                                                      Number)


630 Dundee Road, Suite 400        Northbrook, Illinois                     60062
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                   (Address of principal executive offices)



Registrant's telephone number                                     (847) 498-7070
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Item 2. Acquisition or Disposition of Assets  

On January 21, 1998, IDEX Corporation ("IDEX") purchased the common stock of
Gast Manufacturing Corporation for approximately $120 million.  The purchase
price, arrived at through arms-length negotiations between IDEX and Gast, is
subject to an adjustment equal to the difference between certain targets
provided in the contract and the amounts at closing.  The purchase price was
financed with borrowings under IDEX's U.S. credit facility and its Short Term
Facility.


Gast Manufacturing designs, manufactures and distributes air moving products,
including vacuum pumps, air motors, vacuum generators, regenerative blowers, and
fractional horsepower compressors.  The stock purchase of Gast included
substantially all of Gast's assets including trade accounts receivable,
inventory, machinery and equipment.  IDEX intends to operate the acquired assets
in the same business in which Gast operated.


Item 7. Financial Statements and Exhibits

It is impracticable to provide the required financial statements and pro forma
information for Gast.  Therefore, the required financial statements and pro
forma information has not been included in this Form 8-K report filing.  The
required financial statements and pro forma financial information will be filed
under cover of a report on Form 8-K within 60 days.








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                                  SIGNATURES

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







                                                        IDEX Corporation




                        February 5, 1998        /s/     WAYNE P. SAYATOVIC
                                                -----------------------------
                                                        Wayne P. Sayatovic 
                                                        Vice President-Finance,
                                                        Chief Financial Officer
                                                        and Secretary (Principal
                                                        Financial Officer)