Mompmuir 19mm Silicone Flange Inserts – 2-Pack, Compatible with Elvie Stride, Lansinoh, Spectra, Medela, and More

Customize your pumping fit with Mompmuir

The Mompmuir 19mm silicone flange inserts are designed to adapt shield sizes for a more comfortable pumping experience. By reducing the nipple tunnel from typical 24–25mm to 19mm, these inserts help your flange match a smaller fit without changing your pump’s core suction.

Designed for real-world use, the second-generation insert features a two-level taper that guides milk flow while preserving effective suction. This means you can explore a snug fit without worrying about reduced performance from your pump.

Key benefits at a glance

• Approximate fit for a range of popular pumps, including Elvie Stride, Lansinoh, Spectra, Medela, and more.
• Soft silicone offers a gentle touch against the skin, for comfortable sessions even during longer pumping.
• Two-level taper supports milk flow while maintaining suction, helping you feel confident during pumping.
• 2-pack for easy replacement and on-the-go swapping—great for flexible daily routines.
• Designed to be BPA and DEHP free, and made to suit boiling-water or steam cleaning, with top-rack dishwasher-safe care.

Fit, size details and real-world use

Ideal for pre-pump nipple diameters around 15–16mm (circumference about 47.1–50.2mm). If your current shields measure around 24–25mm, this insert can offer an alternative fit without needing to replace your entire flange.

Other size options are available (15, 16, 17, 18, 19, 20, 21, 22mm) for a broader range of users. The soft silicone keeps the sensation comfortable while you pump, and the seamless design minimizes the risk of irritation.

Care and installation

• Easy to install and remove—swap sizes as needed for different pumps or sessions.
• Boiling-water safe, steam safe, and top-rack dishwasher safe for straightforward cleaning.
• Food-safe materials and a seamless finish for peace of mind during routine care.