Do you steriliz

Do you sterilize S1 accessories in sterilizer machine and does it damage the components or not? I have been using for 22 days only and boiled them in the pan 2 times only and I recognized some wavy damages on the 24mm flange part. If sterilizer machine is more suitable for the pump, then I will buy a sterilizer machine.
Also, I like fridge hack but I observed thaf it cause the loosening of the 24mm flange part. Do you experience that? Is the real reason of that problem is fridge hack?
My overall experience is not so good with S1. It is hard to join the parts together and have some leakege problem while pouring the milk out of pumps.

I put the S1 parts in my momcozy bottle washer to sterilize it once a day and have not noticed any issues or defects