The Eufy Baby Breast Pump Heating Flange 2s is a two-pack of 24 mm replacement flanges for the eufy Breast Pump E20, S1 and S1 Pro. If your original flanges are showing wear, or you'd like a second set to keep your pumping routine running while one pair is being cleaned, this is the part that seals against the breast, channels milk into the collector and creates the suction your pump relies on.
Each flange is made from soft silicone, shaped for an ergonomic fit and built with eufy's HeatFlow technology, which is designed to add gentle warmth during expressing for a more comfortable session. Because the flange is a milk-contact part that also holds the vacuum seal, keeping it in good condition matters for both hygiene and how well your pump performs.
How it Works
- Vacuum seal: The soft silicone flange seals against the milk collector so your pump can hold its suction while you express.
- HeatFlow technology: Built-in warmth is designed to make pumping feel more comfortable and soothing throughout the session.
- Ergonomic shape: The flange tunnel is contoured for a comfortable fit against the breast during use.
Fit and Compatibility
These flanges are sized at 24 mm and are made specifically for the eufy Breast Pump E20, S1 and S1 Pro. They're also designed to work with flange inserts, whether you use eufy's own inserts or compatible inserts from other brands, so you can fine-tune your fit if 24 mm isn't quite right for you.
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. Make sure the duckbill valve, flange tunnel, diaphragm and pump hub are all securely sealed before you begin, as this is what gives you reliable suction.
For everyday cleaning, wash with warm, soapy water and rinse well after each use. The flanges are dishwasher-, fridge- and freezer-safe, which makes turnaround between sessions quicker.
When to Replace
These flanges typically last around 3 months, though this depends on how often you pump and sterilise. It's worth replacing them if you notice suction or performance dropping off with use, or simply based on your own usage pattern. They come with a 90-day limited manufacturer's warranty.
Best For
The Eufy Baby Breast Pump Heating Flange 2s is a great option for parents who:
- Own an eufy Breast Pump E20, S1 or S1 Pro and need genuine 24 mm replacement flanges
- Want a spare set to rotate while one pair is being washed or sterilised
- Prefer a soft silicone flange and would like the added warmth of HeatFlow during sessions
- Use flange inserts to personalise their fit
It may not be the right fit if you:
- Have a pump from a different brand or an eufy model not listed as compatible
- Need a flange size other than 24 mm and don't plan to use an insert to adjust the fit
Care & Maintenance
HeatFlow technology for warm, smooth pumping
Soft silicone construction for strong suction
Comfy, ergonomic fit
Works with third-party inserts as well as eufy inserts
Dishwasher, fridge, and freezer-safe
eufy Breast Pump S1
eufy Breast Pump S1 Pro
- 2x Flange (24mm)