There are several insulators on each Comtec machine. They are used to help prevent heat from the Heater Block from transferring to other parts of the machine.There are several Insulators on each machine.You can contact Comtec to help identify which Insulator you need for your machine or you can download the parts breakdown for the Model 1100 and Model 2200 to see where each insulator is on the machines.

Model 2200
Insulator, Inner Crown (p/n 00301200)
Insulator, Outer Crown (p/n 0030 1100)
Insulator, Lower (p/n 0030 1150)

Model 1100
Insulator, Inner Crown (p/n 00301200)
Insulator, Outer Crown (p/n 0030 1100)