Exhibit 32.1

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

I, Robert G. Ruhlman, Chairman, 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 Quarterly Report on Form 10-K of the Company for the period ended December 31, 2004 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 24, 2005	/s / Robert G. Ruhlman
		Robert G. Ruhlman
		Chairman, President and Chief Executive Officer
		(Principal Executive Officer)

A signed original of this written statement required by Section 906 has been provided to Preformed Line Products Company and will be retained by Preformed Line Products Company and furnished to the Securities and Exchange Commission or its staff upon request.