DeLonghi pump seal (O-ring, part number 5313217741) is a critical component for proper operation of the Ulka EP5 vibration pump in DeLonghi fully automatic coffee machines. This O-ring seals the pressure side of the pump and the connection to the steam valve, safety valve and membrane regulator. If your coffee machine shows signs of leakage in the pump area or valve system, this O-ring is the most common source of the problem.
When does this part need replacement? (Failure symptoms)
This O-ring typically fails when one of these symptoms appears:
- Water leaks into the drip tray during coffee preparation, even though only coffee should flow
- Coffee flows very slowly, only dripping, because the pump cannot build sufficient pressure due to leakage
- Coffee machine makes unusual hissing or sputtering sounds in the pump area during operation
- Coffee puck in the waste container is wet and falls apart, not a firm dry puck
- Water leaks from the bottom of the coffee machine, in the area where hoses connect to the pump or valve
- When the coffee machine is switched on, the pump sucks air instead of water because the seal is not tight
Compatibility: Which models is this part for?
This O-ring is compatible with DeLonghi fully automatic coffee machines equipped with the Ulka EP5 vibration pump. Since the product parameters do not contain a list of specific compatible models, we recommend verifying the part number in your coffee machine before ordering or contacting our expert technical support. This O-ring is typically used in ECAM, ETAM, ESAM series and older EC models with Ulka EP5 pump.
Original spare part
This O-ring is an original DeLonghi spare part with part number 5313217741. Using original parts guarantees precise dimensions, material resistance to temperature and pressure, and long service life. Compatible alternatives may have different dimensions or material, leading to repeated leakage.
Delivery and expert support
Part is in stock and we ship within 24 hours from EU. Our expert technical support will help you select the correct seal and advise on replacement.
Frequently Asked Questions
Which DeLonghi models is this O-ring suitable for?
This O-ring is designed for DeLonghi fully automatic coffee machines with Ulka EP5 vibration pump, typically models from the ECAM, ETAM, ESAM and EC series. Before ordering, we recommend verifying the spare part number 5313217741 in your coffee machine or contacting us to verify compatibility.
Is this an original or compatible part?
This is an original DeLonghi spare part with part number 5313217741. Original seals are made from certified materials resistant to pressure and temperature, which guarantees long service life and reliable sealing.
How quickly will we receive the ordered part?
Part is in stock and we ship within 24 hours from EU. Our expert technical support is also available to help you with seal selection and installation.
| Manufacturing company | De’Longhi Appliances S.r.l. |
|---|---|
| Address | Via L. Galvani, 22, 31100 Treviso TV, Italy |













