Yes, polyethylene terephthalate is suitable for 3D printing. PET 3D filament is an easy material to use. Its temperature range for the PET extruder is quite wide at 160°C to 210°C. 

The advantages of using PET for 3D printing are that it is food-safe, waterproof, has a glass-like appearance, and does not produce odor or fumes. The disadvantages are that PET may take some tweaking to find the right temperature for printing. In addition, it has a wide range of printing temperatures and may be slow to print.