LETTER 1 filename1.txt Mail Stop 6010 June 19, 2006 Mr. Dominic A. Romeo Vice President and Chief Financial Officer IDEX Corporation 630 Dundee Road Northbrook, Illinois 60062 Re: IDEX Corporation Form 10-K for the year ended December 31, 2005 Filed March 6, 2006 File No. 001-10235 Dear Mr. Romeo: We have completed our review of your Form 10-K and related filings and do not, at this time, have any further comments. Sincerely, Martin F. James Senior Assistant Chief Accountant