... silicone O ring 1.Material:food grade silicone safe for baby 2.Certificates:ISO,FDA 3.Free samples Colorful food ... stock (light purple, white,light rose,baby blue,Lemon green,clear,dark blue,Turquise)5.Performance: anti-oxidation, resistant to flexural ... deformation, etc.6.Applications: Used as adapter ring for baby kits7.High ...