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                                  UNITED STATES

                       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: OCTOBER 20, 2005
                        (Date of earliest event reported)

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


       DELAWARE                  1-10235                    36-3555336
      (State of           (Commission File Number)         (IRS Employer
     Incorporation)                                      Identification No.)


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

                                 (847) 498-7070
              (Registrant's telephone number, including area code)



         Check the appropriate box if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions:

   [ ] Written communications pursuant to Rule 425 under the Securities Act
       (17 CFR 230.425)

   [ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act
       (17 CFR 240.14a-12)

   [ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the
       Exchange Act (17 CFR 240.14d-2(b))

   [ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the
       Exchange Act (17 CFR 240.13e-4(c))

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Item 2.02 - 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 2.02 of Form 8-K, "Results of
Operations and Financial Condition."

On October 20, 2005, IDEX Corporation issued a press release announcing
financial results for the quarter ended September 30, 2005. 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.


Item 9.01 - Financial Statements and Exhibits.

(c)      Exhibits

         99.1      Press release dated October 20, 2005












                                    SIGNATURE


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




                                      By: /s/ Dominic A. Romeo
                                      ------------------------------------------
                                      Dominic A. Romeo
                                      Vice President and Chief Financial Officer

October 20, 2005







                                  EXHIBIT INDEX

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

99.1                  Third quarter 2005 earnings release dated October 20, 2005