1 EXHIBIT 21 SUBSIDIARIES OF THE REGISTRANT State or Other Jurisdiction of Incorporation Name of Subsidiary or Organization ------------------ --------------- The Elco Corporation Ohio (1) ELDISC Export Co. (100% owned by The Elco Corporation) Delaware (1) Harvel Plastics, Inc. (85% owned by The Elco Corporation) Pennsylvania (1) Seibert-Oxidermo, Inc. Michigan (1) Detrex Industrial Water Treatment Michigan (2) Wayne Chemical Products Company Michigan (2) (1) Financial statements of subsidiary company included in the Consolidated financial statements. (2) Inactive Corporations