EXCELLENT SEALING, NO LEAKAGE: The sealing ring made of eco-friendly silicone inside the jar lid provides good sealing performance. Each jar sealing ring features a small grooves design for a tight and secure fit, not easy to slip or move around. Tightly sealed to ensure airtightness and prevent leakage, providing hassle-free storage. HIGH QUALITY AND FOOD GRADE MATERIAL: These canning lids are made of premium quality silicone seals that can withstand high and low temperatures. They can be used in refrigerators, microwave ovens, and dishwashers. The lids do not rust, and the food-grade silicone ring can be in direct contact with food. UNIVERSAL SIZE, WIDE APPLICATION: These lids are compatible with all regular mouth jars, including Ball and Kerr jars. They provide reliable sealing and are suitable for use with most bottles and jars to store fruits, cookies, candies, salad, milk, smoothies, tea, coffee, screws, or other small items. WRITE TO LABEL, ENJOY FRESHLY MADE FOOD: You can write the date and time of food preparation on the canning lids. Customize each lid using a permanent marker. Simply write directly on the lid surface to easily identify the contents of the jar and enjoy freshly made food. SPLIT DESIGN: These jar canning lids can be used with stainless steel bands. Replace older, rusted lids and avoid disposable options by using these reusable alternatives. Keep food, grains, dressings, and drinks securely sealed without worrying about leakage that could contaminate the kitchen or other areas. (Please note: Canning bands are not included.) Color: Silver Material: Tinplate Size: 86mm Package Contents: 80 x Wide Mouth Canning Lids Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the actual item. Measurement may vary by +/- 1-3cm.