Most vinyl can't survive the dishwasher. I would suggest washing your item by hand. Now, this is unless you are using a vinyl-like 751. You could also cover the thing with Mod Podge. This would seal the design making it dishwasher safe.
![PU Heat Transfer](/uploads/allimg/20230105/1-23010513463TI.jpg)
PU Heat Transfer
05 Jan 2023