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                                                                      Exhibit 23



                         CONSENT OF INDEPENDENT AUDITORS


We consent to the incorporation by reference in the Registration Statement (Form
S-8 No. 333-39763) pertaining to the CUNO Incorporated 1996 Stock Incentive
Plan, CUNO Incorporated Non-Employee Directors' Stock Option Plan and CUNO
Incorporated Savings and Retirement Plan of our report dated June 24, 1998, with
respect to the financial statements and schedules of the CUNO Incorporated
Savings and Retirement Plan included in this Annual Report (Form 11-K) for the
year ended December 31, 1997.




Hartford, Connecticut
June 29, 1998                                /s/ Ernst & Young LLP




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