Product features and benefits Compatibility: Precisely designed to fit Long, E16, Baistdu, 8 & 9 Series, Carimali, Mom, and E61 coffee machines. Engineered for a snug, reliable seal on the original group head/steam connections used by these models. Heatresistant silicone: Made from durable silicone that tolerates steam temperatures and repeated use without cracking or degrading. Maintains flexibility and sealing performance over time. Prevents steam leaks and restores pressure: Replacing worn seals stops steam and water leaks, restores proper boiler/grouphead pressure, and helps produce consistent extractions for fuller, more balanced coffee flavor. Easy DIY installation: Supplied with a simple installation tool so you can the sealing ring quickly and accurately—no professional service required. Saves time and service costs. Performance and longevity: The material and precise fit reduce maintenance frequency and help preserve machine performance between professional services. How this solves common problems Stops escaping steam and dripping portafilters that lead to weaker extraction and wasted water. Restores correct pressure and flow, improving crema, flavor clarity, and shot consistency. Durable silicone means fewer replacements and reduced downtime. Typical use scenarios Home maintenance: an aged gasket on an E61 or Long machine to restore proper sealing and improve daily espresso quality. Café service: Quickly swap a worn ring on a Carimali or 8 & 9 Series unit during a slow period to eliminate steam leaks and maintain service quality. Preventive care: Keep a Mom, E16, or Baistdu machine in peak condition by replacing seals during routine maintenance to avoid sudden leakage and pressure loss. Specifications and what's included Material: Heatresistant silicone Fit: Precisionmatched for the listed models Included: Sealing ring(s) and an installation tool for easy replacement Reliable, durable, and easy to install — a straightforward replacement part to stop leaks and improve brewing performance on the specified machines.