Replace felt / gasket

The sealing felt is essential for an airtight Grill Guru Kamado. It keeps the heat in and ensures a constant temperature. The felt also protects the ceramic of the dome & the base. Over time, the felt will lose its effectiveness, typically after about 40 uses. The felt should be replaced if it becomes flat/slippery or starts to fray. Also, if your kamado starts leaking smoke, this is often a sign to replace the felt. If replaced too late, the Grill Guru may be damaged, and any damage caused by this is not covered by the warranty. 

Felt or Infinity Gasket?
The use of an infinity gasket is not recommended. The hinge is not suitable for this, which can eventually push the gasket off the base and dome, resulting in damage.