Momcozy Breast Pump Accessories Flang S9 Pro/S12 Pro 27MM

Restore your wearable breast pump to peak expression efficiency and comfort. The Momcozy 27mm Replacement Flanges are medical-grade, authentic spare parts specifically engineered for the award-winning S9 Pro and S12 Pro wearable breast pumps.

Crafted from ultra-flexible, food-grade liquid silicone, these 27mm shields conform smoothly to your breast shape, creating an optimal vacuum seal that minimizes friction and maximizes milk expression. Choosing the correct flange size is essential for avoiding nipple friction, preventing milk backup, and maintaining the strong, hospital-strength suction your Momcozy pump is designed to deliver.

Key Features & Benefits

• Seamless S9 Pro & S12 Pro Compatibility: Designed as an authentic, factory-spec replacement part. These flanges click perfectly into the internal sealing tracks of your S9 Pro and S12 Pro collection cups, preventing milk leakage and maintaining a steady suction rhythm.

• Double-Sealed Edge Protection: Features an advanced, double-flanged rim design that securely hugs your breast contour. This layout prevents air gaps and loss of suction, allowing you to pump confidently while moving around or multitasking.

• Premium 50A Soft Liquid Silicone: Made from premium 50A-grade liquid silicone that is ultra-flexible and soft against sensitive skin. It mimics an infant’s natural latch, distributing suction evenly to eliminate pinching and protect delicate breast tissue.

• Optimized for 27mm Nipple Diameters: Ideal for mothers whose post-pumping nipple diameter measures between 24mm and 25mm. Using the correct size ensures your nipple can move freely within the tunnel without rubbing against the sides, promoting a faster letdown and preventing painful swelling.

• 100% Safe & Toxin-Free Materials: Your infant’s milk purity is paramount. These replacement flanges are completely free from BPA, BPS, PVC, and phthalates, ensuring your milk remains pure and contaminant-free.

• Ideal Base for Flange Inserts: If you require a smaller, more specialized size (such as 17mm, 19mm, or 21mm), this 27mm flange serves as the perfect base to host standard Momcozy silicone inserts securely.

Size Guide: Is the 27mm Flange Right for You?

How to Measure: Use a nipple ruler before a pumping session to measure the absolute diameter of your nipple base (excluding the surrounding areola).

• Choose a 27mm Flange if: Your base nipple measurement is 24mm to 25mm.

• Signs your flange is too small: Your nipple rubs tightly against the tunnel walls, causing friction blisters, pain, or restricted milk flow.

• Signs your flange is too large: Excessive amounts of your areola are pulled deep into the tunnel during suction, causing discomfort and lower milk yields.

Technical Specifications

Feature	Specification
Flange Size Diameter	27 mm (Large)
Device Compatibility	Momcozy S9 Pro and Momcozy S12 Pro Wearable Pumps
Material Composition	100% Food-Grade 50A Soft Liquid Silicone
Safety Certifications	BPA-Free, BPS-Free, Phthalate-Free, Latex-Free
Colorway	Semi-Transparent Frost White
Package Options	Available in Single-Pack (1 piece) or Double-Pack (2 pieces)

Care, Cleaning & Sanitization

Hygiene & Performance Protocol: Wash thoroughly with warm, soapy water after every single use. These silicone flanges are safe for quick steam or boiling water sterilization (up to 100°C / 212°F) for 3–5 minutes. To maintain optimal suction and protect the elastic properties of the silicone, avoid using stiff bottle brushes or abrasive scrubs inside the narrow nipple tunnel. Replacement Reminder: Lactation experts recommend replacing your silicone breast pump parts every 2 to 3 months under heavy daily use, as worn-out silicone naturally stretches over time, leading to lower suction strength and decreased milk output.