The Eufy Baby Breast Pump Diaphragm (2-Pack) is a genuine replacement part for the Eufy breast pump range, designed to keep your pump maintaining steady, reliable suction. The diaphragm is one of the soft, flexible components that helps the pump create and hold its vacuum, so replacing a worn one is often what brings performance back rather than needing to service the motor itself. This pack gives you two spare diaphragms to keep on hand.
It's compatible with the Eufy Breast Pump E10, E20, S1 and S1 Pro. Made from food-grade silicone, it's a milk-path component built for repeated use and sterilising, with a smooth surface that makes cleaning quick and easy for daily pumping.
How it works
- Vacuum seal: The flexible silicone diaphragm helps create a secure seal, which supports the steady suction the pump relies on to express milk.
- Part of a closed design: As one of the soft parts in the pump system, it helps protect the pump as part of its closed design.
- Wear component: Like all soft pump parts, the diaphragm loses elasticity with use and sterilising over time, so a fresh one helps restore consistent performance.
When to replace it
The diaphragm typically lasts 1–3 months. Replace it when you notice suction or efficiency starting to drop with use and sterilising, or based on how often you pump. Keeping a spare set means you're not caught out when a part is due for a swap.
How to use
Before first use, sterilise all washable components by either boiling them for 5 minutes with continuous stirring, or steaming them for 5 minutes. When reassembling, make sure the duckbill valve, flange tunnel, diaphragm and pump hub are all securely sealed to ensure optimal suction.
Backed by a 90-day limited manufacturer's warranty.
Best For
The Eufy Baby Breast Pump Diaphragm (2-Pack) is a great option for parents who:
- Own an Eufy E10, E20, S1 or S1 Pro breast pump and want genuine replacement parts
- Have noticed suction dropping and want to refresh a worn soft component
- Like to keep spares on hand so pumping isn't interrupted
Care & Maintenance
Food-grade silicone, safe for both mother and baby
Flexible and durable, maintains steady suction while withstanding wear and tear
Smooth surface for effortless cleaning and sterilization
Covered by a 90-day limited manufacturer's warranty
Typically lasts 1-3 months
eufy Breast Pump E20
eufy Breast Pump S1
eufy Breast Pump S1 Pro
- 2x Diaphragm