These Mason jars lids are made of lightweight tinplate material, which is not easy to deform or damage, strong and durable; at the same time, they have good high-temperature resistance, can be safely placed in the refrigerator, microwave oven and dishwasher. The surface is smooth, the texture is delicate, safe and odorless.Our split-type jar lids use selected silicone sealing gaskets to ensure their airtightness, leak-proofness, making the jar lid fit more closely to the jar body, maintaining good airtightness and the freshness of food without worrying about leakage or damage.These canning lids are suitable for various jars such as storage bottles, water bottles, liquid bottles, etc. You can use it to hold liquids such as beverages, tea, coffee, milk, and can also be used to store food such as cereals, candies, fruits, salads, etc. In addition, it is also a practical accessory for your handicrafts, DIY projects, and kitchen storage.Please note that before purchasing, please confirm the size of your jar mouth and choose a tinplate mason jar lid that fits the size of the jar mouth to ensure that it can be properly covered and sealed.