Universal Round Pot Lid for Pots Pans and Skillets Pot Lid With Heat Resistant Silicone Rim and Tempered Glass Frying Pan Cover. The pot lid is made of high-quality tempered glass and food grade silicone, which will not rust, is sturdy and durable, and has good heat resistance. Transparent lid design, making it easy to observe the cooking process at all times. Exhaust hole design to release excess moisture and pressure, avoiding overflow. Easy to clean and can be used in dishwashers. Suitable for most frying pans, pots, etc. on the market.