💕【Perfectly Compatibility with Momcozy M5】Our duckbill valve and diaphragm kit have the same suction as the original M5 pump parts without any gap issues. They can perfectly meet the accessories you need when using M5 wearable breast pump and 100% compatible. | 💕【Pump Efficiency】The silicone diaphragm is used to help the breast pump maintain the seal to prevent milk leakage. Silicone Duckbill valve can be used to drain milk to the bottom of the containeris and prevent back-flow of breast milk. | 💕【Upgrade Pump Parts】M5 breast pump accessories has upgraded with the aim of improving milk suction efficiency, and has increased the milk storage capacity of the container just right. We have prepared sufficient number of Momcozy M5 replacement parts for new moms, they can spend their feeding life worry-free. | 💕【Safe Food Grade Silicone】M5 breast pump part kits are made of soft silicone materials, durable, BPA free, very safe for human body. It's a nice pump parts replacement, giving you peace of mind about your baby's milk. All AOTOFONT pump parts that come in contact with breast milk are BPA free, it's safe for you and your baby. | 💕【Easy to Clean & Durable】After each use with warm soapy water and clean. They can be sanitized using around 100°C (212°F) water steam or boiling water, and dishwasher safe. We recommend cleaning pump parts immediately after each use and replacing them every 2-3 months to maintain optimal function.