15mm Flange Inserts (6 pcs) for Breast Pumps & Accessories – Compatible with Momcozy, Lansinoh, Spectra, Haakaa and Medela
Product description
If you’re getting anything from “a bit uncomfortable” to “not quite getting the latch right” while pumping, the flange insert can be one of those small changes that makes a noticeable difference. These 15mm flange inserts (6 pieces) are designed to sit with specific breast pump shields/flanges, with a clear sizing rule: they’re for 24mm shields/flanges only.
On paper, they’re also positioned as a flexible add-on across a range of wearable and traditional electric breast pump systems, including compatibility references such as Momcozy S9/S12 Pro series and brands like Lansinoh, Spectra, Haakaa and Medela. That variety is helpful if you have multiple pump setups, but it also means you’ll want to be strict about sizing before you order.
The essentials
These flange inserts are transparent silicone replacement accessories intended to improve comfort and pumping efficiency by matching the insert size to your nipple/fit. The listing also flags that swelling can happen for some people, so it’s worth monitoring how your nipple looks during pumping rather than assuming the first setup is always perfect.
The “why it matters” bit is simple: flange fit affects comfort and milk flow. If the insert doesn’t match your needs, pumping can feel harder than it should, and you may end up with irritation or reduced effectiveness. This kit is aimed at people who already know they need a 15mm insert and want additional pieces to keep things running.
Compatibility and sizing: the part to get right
A key limitation is stated clearly: these inserts are only suitable for 24mm shields/flanges. They cannot be used with other flange sizes.
In practical terms, that means you’ll need to confirm what you have today—are you using a 24mm shield/flange setup? If yes, then a 15mm insert may be the right refinement. If you’re not on 24mm, this kit is likely the wrong purchase even if your pump model appears in the compatibility list.
The compatibility text also mentions use with various brands and wearable pump systems, including any S9 Pro/S12 Pro/S9/S12 wearable breast pumps (with examples like Momcozy S12 Pro/S9 Pro/S12/S9 Hands-Free). It also lists numerous other compatible systems when used with 24mm shields/flanges.
What you’ll notice in day-to-day use
The silicone material is transparent and described as BPA-free, which is reassuring for many buyers. The insert can also be made easier to fit by using coconut oil or nipple butter to reduce friction.
A realistic mini-scenario: imagine you’ve switched from one pumping session to another and your nipple feels a bit “tight” inside the flange. If you’ve previously identified that you need a smaller insert size, swapping to a 15mm insert (while using the correct 24mm shield/flange) can make the pumping setup feel smoother and reduce tugging pressure.
That said, it’s not a magic fix. If the shield size is wrong, or if your nipple is swollen from an unrelated issue (positioning, let-down timing, or irritation), you may still feel discomfort.
Cleaning and replacement timing
Cleaning is straightforward: after each use, wash the replacement pump parts with warm soapy water and rinse thoroughly.
For replacement, the listing recommends changing the flange insert every 1 to 2 months. If you pump regularly, having a 6-piece kit can be handy so you can rotate parts and keep your routine consistent—just don’t ignore hygiene and allow parts to dry properly.
Where it shines, and when it may fall short
These inserts suit shoppers who already have (or plan to use) 24mm shields/flanges and want a 15mm insert to refine comfort and pumping efficiency. If you’re in a “small adjustment, big difference” mindset, the kit is easier to justify because the need is usually very specific.
It may not be the best choice if you’re unsure of your current flange/shield size. Since the compatibility is explicitly tied to 24mm shields/flanges, guessing could lead to wasted time and money.
Tech specs
- Type: Flange inserts for breast pumps (silicone replacement parts)
- Size: 15mm (flange insert size)
- Quantity: 6 pcs
- Material: Transparent silicone (BPA-free)
Should you buy it?
It makes sense if you’re using 24mm breast shields/flanges and you’ve identified that a 15mm flange insert is what you need for comfort and better pumping sessions. It’s also a solid “keep spares” option thanks to the 6-piece pack.
You may want to skip it if your pump setup uses a different shield/flange size, because these inserts are stated as not compatible with other sizes. It’s also worth being a bit cautious if you’re hoping the insert will fix broader fit issues without checking your shield size first.
Overall, it sits in the practical replacement category: not glamorous, but useful when size matters and you want silicone inserts that are easy to clean and designed for everyday pumping.
Mini FAQ
Are these flange inserts compatible with different shield sizes?
No. They’re only stated as suitable for 24mm shields/flanges, and not for other sizes.
Can I use coconut oil or nipple butter to fit the inserts?
The listing suggests that using coconut oil or nipple butter can reduce friction and make them easier to use.
How often should I replace the inserts?
The recommendation is every 1 to 2 months.
Are the inserts BPA-free?
Yes, they’re described as BPA-free.
How should I clean them?
Wash with warm soapy water after each use and rinse thoroughly.