The airtight seal provided by these gaskets is for preserving the carbonation in your homemade sodas and beers. The gaskets are designed to withstand pressure, ensuring that your beverages stay fizzy and delicious. They are also great for sealing bottles of homemade sauces, dressings, and other liquids. Features -Color:Green -Material:Silicone -Size:2.50X2.50X0.70cm/0.98X0.98X0.28in -Leakproof performance: designed to prevent beer bottle leaks, ensuring a clean and enjoyable drinking experience - Silicone: made from silicone, these gaskets are built to last and maintain their shape and effectiveness over time -Easy application: userfriendly design allows for quick and easy installation, simply place the gasket on the bottle mouth and secure with the sealing cap -Versatile use: compatible with various bottle types with similar mouth sizes, offering a flexible sealing solution for different beverages -Portable and convenient: lightweight and compact, these gaskets are easy to carry and store, making them ideal for travel and outdoor use Package list: 20 x bottle cap sealing gasket