Make of high grade rubber, these cup lid gaskets provide excellent leak and without any odors, ensuring long term durability for daily use. Designed to create a tight seal between lid and cups, these replacement rubber gaskets keep food freshness and while leaks during storage or transport. You will receive 10 pieces of lid gaskets, sufficient for multiple replacements or sharing with family and friend as essential kitchen accessories. Simply rolling out the old rubber rings with your fingers – these gaskets are effortless to install and replace whenever needed. These versatile sealing rings fit most standard cups.