Rancilio O-Ring Gasket for Silvia Boiler Compatibility
This Rancilio O-Ring is the OR177 O-Ring equipped standard on all Rancilio Silvias. It is mounted between the group body and the upper boiler cavity housing. It is recommended to change this O-ring any time boiler disassembly occurs. Limescale buildup from hard water can impact performance. Please use properly treated water and remember to descale regularly.