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                                                                      Exhibit 23


                         CONSENT OF INDEPENDENT AUDITORS


We consent to the incorporation by reference in this Annual Report (Form 10-K)
of CUNO Incorporated ("CUNO") of our report dated December 14, 2000, included in
the 2000 Annual Report to Shareholders of CUNO.

Our audits also included the financial statement schedule of CUNO listed in Item
14(a). This schedule is the responsibility of the Company's management. Our
responsibility is to express an opinion based on our audits. In our opinion, the
financial statement schedule referred to above, when considered in relation to
the basic financial statements taken as a whole, presents fairly in all material
respects the information set forth therein.

We also 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, the CUNO Incorporated Non-Employee Directors' Stock Option Plan,
and the CUNO Incorporated Savings and Retirement Plan of our report dated
December 14, 2000, with respect to the consolidated financial statements
incorporated herein by reference, and our report included in the preceding
paragraph with respect to the financial statement schedule included in this
Annual Report (Form 10-K) of CUNO.


/s/ Ernst & Young LLP

Hartford, Connecticut
January 17, 2001



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