Compatibility Designed for S32 wearable breast pumps, compatible with S32 models such as Discreet Duo, NCVI, NICEGREEN, Nuliie, and Zooawa. Use compatibility only to confirm fit with your model before . Key benefits Restores suction performance by replacing worn silicone flanges and duckbill valves, helping maintain consistent milk flow. Soft silicone flange provides a secure seal against the breast to reduce leaks and preserve pump efficiency. Duckbill valve lets milk flow in one direction to minimize backflow and maintain reliable suction. Features and specifications Material: durable, soft, odorless silicone for comfortable contact with the skin. Design: silicone breast shield with duckbill valve for oneway milk flow and effective sealing. Performance: engineered to match OEM flow and sealing characteristics to deliver comparable output. Cleaning: wash valves and diaphragms after each use with warm soapy water and rinse thoroughly. Sterilize by boiling or steam at or below 100 C (212 F) for 5 to 10 minutes as needed. Replacement guidance: parts every 4 to 12 weeks if they become deformed or yellowed to maintain performance. Practical use scenarios Daily pumping: swap in fresh silicone shields and valves to restore seal and suction during regular pumping sessions. Travel and storage: carry spare flanges and valves to quickly parts that show wear while on the go. Maintenance and troubleshooting: valves and diaphragms when you notice reduced suction or leaks to recover pump efficiency. Why choose these replacement parts Engineered to fit S32 wearable pump interfaces and to reproduce the sealing and flow function of original components. Soft silicone shields improve contact comfort while maintaining functional performance. Simple cleaning and clear replacement intervals help keep your pump working reliably over time.