Compatible with machines Perfect for replacing worn or damaged O-rings in coffee machines. Prevents water leaks from the coffee machine during use. Helps parts are securely connected to keep the coffee machine running properly. Heat and high temperature , ensuring life and durability, not easy to deform. Designed according to the original machine size, easy to install and fits perfectly. Made of silicone material, , safe and healthy. Colour:As Shown Material:Silicone Package Contents: 30 * Sealing ring Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.