Our silicone flanges can be sterilized with any method, but it's extremely important not to steam all of the water away because the parts can melt and deform under heat without water.
It may help to know that sterilization of PumpinPal parts isn't generally necessary as long as there isn't anyone in the home (including your baby/babies) who is immune-compromised. Human milk is highly resistant to bacterial growth and our silicone and plastics are medical-grade without any pores that can harbor bacteria.
Reviewed by Diana West, IBCLC
June 10, 2021