================================================================================

                       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): APRIL 22, 2004





                                IDEX CORPORATION
             (Exact Name of Registrant as Specified in its Charter)




            DELAWARE                      1-10235                36-3555336
(State or other jurisdiction of         (Commission           (I.R.S. Employer
 incorporation or organization)         File Number)         Identification No.)




                                 630 DUNDEE ROAD
                           NORTHBROOK, ILLINOIS 60062
          (Address of principal executive offices, including zip code)



                                 (847) 498-7070
                         (Registrant's telephone number)


================================================================================


ITEM 12.   RESULTS OF OPERATIONS AND FINANCIAL CONDITION

           The information in this Item is furnished to, but not filed with, the
           Securities and Exchange Commission solely under Item 12 of Form 8-K,
           "Results of Operations and Financial Condition."

           On April 22, 2004, IDEX Corporation issued a press release announcing
           financial results for the quarter ended March 31, 2004. A copy of the
           press release is furnished as Exhibit 99.1 to this Current Report on
           Form 8-K and is incorporated herein by reference.








                                   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


                                                 /s/ DOMINIC A. ROMEO
                                                 -------------------------------
                                                 Dominic A. Romeo
                                                 Vice President and
                                                 Chief Financial Officer

April 22, 2004













                                  EXHIBIT INDEX


EXHIBIT
NUMBER       DESCRIPTION
-------      -----------

 99.1        First quarter 2004 earnings release dated April 22, 2004