Maymom Backflow Protector for Spectra S2 Spectra S1, 9 Plus Breastpumps W Bonus Flange Adapters. Replaces Spectra Backflow Protector, Spectra Silicone Diaphragm; Replacement Spectra Pump Parts ; 4 pc

Contains 4 Backflow Protectors, including 4 Large Caps, 4 Small Caps, and 4 Silicone Diaphragms Plus two Flange Adatpters to allow you use with leading brand flanges.

Compatible with Spectra Backflow Protectors, both new and old versions. Made from BPA free Materials, and can be cleaned with boiling water or water steam. No milk will enter the tubing, and thus it will keep the tubing clean and protect your pump motor. FDA registered medical devices. Comply with FDA regulation 21 CFR 177.1520, 21 CFR 177.2600 and EU Commission Regulation (EU) No 10/2011 for plastic materials that intended to come into contact with food.