Features 1、High Temperature Resistance: The o ring is made of silicone, which can withstand high temperature environment without deformation or loss of elasticity. 2、Waterproof: The silicone o ring can effectively prevent water vapor, water droplets and other liquids from infiltrating into the coffee machine components under the o ring. 3、Sealing performance: The o ring adopts precision manufacturing process to ensure that the contact between the o ring and the coffee machine is tight, the sealing effect is good, and the leakage is prevented. 4、Durability: The silicone o ring has excellent durability, can maintain its sealing performance and waterproof function for a long time, and is not easy to age, harden or break. 5、Safe and Reusable: Silicone material is non toxic, tasteless, and safe, to ensure that when used will not have any adverse effects on the taste and health of coffee, can be reused. Specifications Item Type: Coffee Machine O Ring Material: Silicone Weight: Approx. 39.00g / 1.38oz Package List 120 x Sealing Rings(100pcs small sizes + 20pcs large sizes)