================================================================================ 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: APRIL 4, 2006 (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)) ================================================================================

Item 8.01. Other Events. On April 4, 2006, IDEX Corporation issued a press release announcing a 25 percent increase in the company's regular quarterly cash dividend to a rate of $.15 per common share. 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 (d) Exhibits. 99.1 Press release dated April 4, 2006. 2

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. Dated: April 5, 2006 IDEX CORPORATION By: /s/ Dominic A. Romeo -------------------------- Name: Dominic A. Romeo Title: Vice President and Chief Financial Officer 3

EXHIBIT INDEX EXHIBIT NUMBER DESCRIPTION - ------ ----------- 99.1 Press release dated April 4, 2006 4

EXHIBIT 99.1 IDEX CORPORATION INCREASES QUARTERLY CASH DIVIDEND 25 PERCENT NORTHBROOK, IL, APRIL 4, 2006 - IDEX CORPORATION (NYSE: IEX) today announced that its Board of Directors has approved a 25 percent increase in the company's regular quarterly cash dividend to a rate of $0.15 per common share. The next dividend will be paid April 28, 2006, to shareholders of record as of April 14, 2006. This dividend represents the company's 46th consecutive regular quarterly cash dividend payment. ABOUT IDEX IDEX Corporation is the world leader in fluid-handling technologies for positive displacement pumps, dispensing equipment for color formulation, and other highly engineered products including fire suppression equipment, rescue tools, and engineered band clamping systems. Its products are sold in niche markets to a wide range of industries throughout the world. IDEX shares are traded on the New York Stock Exchange and Chicago Stock Exchange under the symbol "IEX."