Features: Excellent sealing performances: our sealing rings is crafted from high-quality rubber and provide excellent elasticity, temperatures resistance and air tightness. They is perfect for your fully automatic coffee machine to prevent leaks and ensure the performances of your machine in the long time. This sealing rings set contains 24pieces O-rings in different size, they is suitable for different parts of the coffee machine and provide high-quality sealing rings in different size. So you have matching O-rings at hand to keep your machine in the best condition. Easy installation: our O-rings set have been precisely matching to the size of the fully automatic coffee machine seal, brewing pistons, steam valves and other component. The replacement is very easy and saves time in the maintenance of your fully automatic coffee machine accessories. Sturdy and resistant: the high-quality brewing group sealing rings is corrosion resistant and withstands high temperatures. Even after long use, they will not interrupts due to leakage or wear. Specifications: Material: Rubber Size: Mixed Size Package Includes: 24Pcs Rubber Sealing Rings note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.