SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                         -------------------------------

                                    FORM 8-K

                                 CURRENT REPORT

                     Pursuant to Section 13 or 15(d) of the
                         Securities Exchange Act of 1934

                       ----------------------------------



        Date of Report (Date of earliest event reported): January 9, 2004



                                AEARO CORPORATION
               (Exact name of Registrant as specified in charter)

                           Delaware 0-26942 13-3840450
           (State or other jurisdiction (Commission file number) (IRS
                 employer of incorporation) identification no.)


               5457 West 79th Street, Indianapolis, Indiana 46268
              (Address of principal executive offices) (Zip Code)

                                 (317) 692-6666
              (Registrant's telephone number, including area code)





Item 7.  Financial Statements and Exhibits

(c)  Exhibit

99.1 Press  release dated January 9, 2004 of Aearo  Corporation  announcing  its
results of operations for the year ending September 30, 2003

Item 12 - Results of Operations and Financial Condition

On January 9, 2004,  Aearo  Corporation  announced its results of operations for
the year ended  September  30,  2003.  A copy of the press  release is  attached
hereto as Exhibit 99.1 and is incorporated herein by reference.

The  information  included  in this  Current  Report on Form 8-K and the Exhibit
attached  hereto  shall not be deemed  "filed" for purposes of Section 18 of the
Securities  Exchange Act of 1934 or otherwise subject to the liabilities of that
Section,  nor shall it be deemed incorporated by reference into any filing under
the Securities Act of 1933, regardless of any general incorporation  language in
such filing, unless expressly incorporated by specific reference to such filing.



                                   SIGNATURES

Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
Registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned thereunto duly authorized.

Date: January 9, 2004                     AEARO CORPORATION

                                          By: /s/Jeffrey S. Kulka
                                             -----------------------------------
                                             Jeffrey S. Kulka
                                             Senior Vice President,
                                             Chief Financial Officer,
                                             and Treasurer