What you get: You will receive 20 pieces of replacement rubber seals in this pack, which fit most mouth cans or regular glasses (3.7 inches). White and orange each contain 10. ?Airtight and leak-proof? Replacement rubber jar seals provide an air-tight, liquid-tight seal for most standard-sized mason and mason jars. You can easily keep your food clean and safe and prevent food from spilling into the preserved container. Reusable and durable: Our rubber grommets are made from high quality rubber which is completely safe for you and your family. Glass sealing rings are reusable, durable and do not absorb aromas and odors. Easy to clean: These replacement rubber rings are soft and smooth. They are easy to clean. If they need cleaning, you can simply add soap and wash with lukewarm water. (Tip: The rubber seal smells a little pungent and will disappear after being exposed to air for a while.) Multifunctional use: Replacement rubber seals for canned goods are ideal for everyday storage,