Affiliates of AEA Investors LLC, the New York and London-based private-equity investment firm, have signed an agreement to acquire, in partnership with management, ASP Unifrax Inc. and its operating company subsidiary, Unifrax Corp., from American Securities Capital Partners L.P. Terms of the transaction were not disclosed. The sale is subject to the satisfaction of customary closing conditions. The current Unifrax management team will continue to operate the business and will have ownership interest in the company. For more information, visit