... an instant airtight seal for no-fuss storage. These versatile silicone lids suction-seal onto most any cup or bowl, creating ... need to dirty a storage container for leftovers. Miracle-Seal Silicone Suction Lids are flexible and work on various sizes of ... including stainless steel, glass, stoneware, ceramic, and plastic.Food-grade silicone is freezer, oven (to 600 Degrees), microwave and dishwasher safe ...