Replacement Rocket Espresso Commercial Group Diffuser O-Ring. This large o-ring sits between the diffuser and the group itself. The diffuser and o-ring should be removed and cleaned regularly. Replace o-ring every 6 months or at any sign of damage. It is recommended to keep extra o-rings on hand as your group cannot properly function without the o-ring in place. Also compatible with the Diletta Mio Espresso Machine.

Part number R499905544.