Key features Group Head Gasket：Espresso Machine group gasket Fits for Rancilio Silvia Group Head Gasket. Espresso Machine group gasket: Gasket is made of great silicone, Prevent leaks and drips . Silicone Group Gasket：SIZE：2.9 in (OD) x 2.2 in (ID) x 0.29 in thick. espresso group gasket：Easy to install,just need to pull out the old oneand then replace it with our Silicone Group Gasket. Sincere Service：Pls contact us first when you get some problem, we will offer you assistance asap,all your questions and issues will be resolved within 24 hours. Group Head Gasket：Espresso Machine group gasket Fits for Rancilio Silvia Group Head Gasket. Espresso Machine group gasket: Gasket is made of great silicone, Prevent leaks and drips . Silicone Group Gasket：SIZE：2.9 in (OD) x 2.2 in (ID) x 0.29 in thick. espresso group gasket：Easy to install,just need to pull out the old oneand then replace it with our Silicone Group Gasket. Sincere Service：Pls contact us first when you get some problem, we will offer you assistance asap,all your questions and issues will be resolved within 24 hours. Free shipping included. 30-day hassle-free returns.