🔄 Keep Your Pumping Game Strong! Get 6 essential components to keep your pump running smoothly. Crafted from BPA and DEHP-free materials for peace of mind. Silicone construction ensures longevity and reliability. Quick and hassle-free installation for busy parents. Ensure optimal performance with 4 O-rings and 2 membranes. Silicone material 6 pcs total BPA & DEHP free The Maymom O-Ring and Membrane set for Medela Harmony includes 4 O-rings and 2 membranes, all made from high-quality, BPA-free, and DEHP-free silicone. This essential replacement pack ensures your breast pump operates at peak efficiency, providing safety and durability for every pumping session.