Exhibit 99.1

     CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002


I, Robert G. Ruhlman, President and Chief Executive Officer, of Preformed Line
Products (the "Company"), certify, pursuant to Section 906 of the Sarbanes-Oxley
Act of 2002, that:

        1)       The Annual Report on Form 10-K of the Company for the period
                 ended December 31, 2002 which this certification accompanies
                 fully complies with the requirements of section 13(a) or 15(d)
                 of the Securities Exchange Act of 1934: and
        2)       The information contained in the Report fairly presents, in all
                 material respects, the financial condition and results of
                 operations of the Company.



March 18, 2003                  /s/ Robert G. Ruhlman
                                ----------------------------------
                                Robert G. Ruhlman
                                President and Chief Executive Officer
                                (Principal Executive Officer)