March 20, 2026 Christopher Tucker Chief Financial Officer ESCO TECHNOLOGIES INC 645 Maryville Centre Drive, Suite 300 St. Louis , MO 63141 Re: ESCO TECHNOLOGIES INC Form 10-K for the Fiscal Year Ended September 30, 2025 Filed December 1, 2025 File No. 001-10596 Dear Christopher Tucker: We have completed our review of your filing. We remind you that the company and its management are responsible for the accuracy and adequacy of their disclosures, notwithstanding any review, comments, action or absence of action by the staff. Sincerely, Division of Corporation Finance Office of Manufacturing