Features: Precisely engineered for 9 series espresso machines, this silicone gasket ensures perfect seals to prevent leaks and maintain pressure during extraction, delivering barista quality coffee. Crafted from heat resistant silicone (withstands up to 230°C), this rings outperforms standard rubber gaskets with enhancing longevity and reliable sealing even under frequent high pressure brewing cycles. Ideal for home baristas, coffee enthusiasts, and small cafés owners seeking professional grade performances from their 450/500/800 series or compatible espresso machines. Essential for daily espresso preparation, this gasket prevents water/coffee leakage during brewing, ensuring consistent crema and full flavored shots whether used in kitchens, offices, or small coffee stations. Simplify maintenance with this easy to install replacement part – simply remove the old seal, clean the group head, and secure the new silicone gasket for restored machine efficiency and preservation. Specifications: Material: Silicone Size: As Picture Shows Package Includes: 1 Set Sealing Rings note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color from the item.