Piston Gasket: Red 0-ring that is located on the upper and lower piston of the brew group. This gasket is responsible for creating an air tight seal for the compacted coffee during the brew cycle.
CP3 Pump O-Ring: Black o-ring located in the water pump to seal the membrane regulator connection.
Riser Tube O-Ring:Black o-ring that is located on the Riser Tube. The Riser Tube is inserted into the upper piston of the brew group. It is the mechanism by which the brewed coffee flows to the dispensing spout. This O-Ring is used to seal both ends of the Riser Tube in the C-E-F-S-X models (F7 TFT-F8 TFT-J-Z-ENA use only 1).
Water Inlet Gasket: Red or black (old) gasket used to seal the connection between the water tank and the machine. It is used in every Jura coffee machine.
Drain Valve Nut Seals: Red or black (old) seals in the valve body of the brew group drain valve. The C-E-F-J-S-X-Z-ENA-GIGA models contain 2 nut seals and the A-ENA Micro models contain 3.
Pressure Hose O-Rings: Blue (High Temp) or black (EPDM) o-rings located on PTFE tubing to seal connections in the water circuit.
Frother Nozzle O-Ring: Red o-ring located on the frother adapter/connector to seal the automatic frother. Used on J-Z models.
Drain Valve Fluid Nipple O-Ring: Black o-ring located on the fluid nipple of the drain valve of the brew group. The fluid nipple injects the hot water into the compacted coffee grounds to complete the brew cycle.
Drain Valve Body O-Ring: Black o-ring located in the drain valve body of the brew group. It seals the connection to the fluid nipple. Also, it seals the connection of the the extension arm in the J-Z-ENA-GIGA models and the 90 degree hose connector in the C-E-F-S-X models.