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The Cometic Muncie M21 AFM transmission gasket kit uses AFM material — a chemically blown, compounded nitrile synthetic rubber bonded to an aluminum core — to deliver reliable sealing. AFM offers about 85% recovery, strong torque retention, and temperature resistance above 205°F. The material does not require sealants or re-torquing, making this kit a practical choice for transmission rebuilds where durable, repeatable sealing is needed.
Cometic Muncie M21 AFM Transmission Gasket Kit
