For this build, you will only need 6mm wide foam tape. Different foam thickness files are available. I recommend to use at least a 2mm foam. With less than that, it will be hard to have enough compression for a good seal.
PLA should be good enough for this print. In normal conditions, the bottom of the chamber never reaches a temperature above 60°C.
This model should be compatible with the K1C
Creality K1 Max Version by Guilouz
No supports
Nozzle : 0.4
Layer height : 0.2
Perimeters : 3
Top/Bottom layers : 4
Infill : 20%
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