This replacement part kit includes two complete sets of breast pump components designed for use with eufy S1 Pro, S1, and E20 models. It is important to note that this kit is not compatible with the eufy E20 model variant. Each set contains a 24mm non-heated flange, a collector, a diaphragm, and a valve, allowing users to refresh worn or lost parts without purchasing an entirely new pump system. The flange is crafted from flexible, food-grade silicone that maintains a gentle seal against the skin while ensuring comfortable expression. The diaphragms and valves are made from durable thermoplastic elastomers that provide consistent suction and prevent air leakage over repeated use cycles. Assembly requires no tools and each component snaps securely into place, making replacement straightforward even for those new to breast pumping. The collector is constructed from translucent polypropylene, which allows easy monitoring of milk flow and volume. All materials used are BPA-free and meet common safety standards for baby products. Since these are non-electronic parts, there are no wires, batteries, or heating elements involved; the focus is purely on mechanical reliability and hygiene. The 24mm flange size is a standard fit for many users, offering a balance between comfort and suction efficiency. For those who require different sizing, this specific kit sticks to a single 24mm option. The parts are designed to be hand-washed or placed on the top rack of a dishwasher for thorough cleaning. Over time, diaphragms and valves naturally lose elasticity, and replacing them at regular intervals helps maintain optimal pump performance. This kit provides two sets, giving users a spare set for rotation or backup. The construction emphasizes practicality: edges are smooth to avoid any irritation, and the flange shape follows a shallow funnel design to reduce discomfort during longer sessions. Since these are replacement components, they will not alter the original pump’s suction strength or pattern; they simply restore the factory-level seal and airflow. Care should be taken to ensure proper alignment during installation to avoid any reduction in pumping efficiency.

These parts serve as a cost-effective way to extend the lifespan of a compatible eufy breast pump while maintaining hygiene and comfort standards.