Elegoo Centauri Carbon Sliding Riser PTFE Plug

If you want to print higher temp materials and want to close that large hole in the back, here's my solution.

Print this in TPU or something else if you want.. TPU is best to squeeze it into the hole.. Sits flush, with a large enough gap to let the PTFE tube go through.

 

This just is a plug to be printed in something like TPU to close the gap for better temp control.