... ISO,FDA 3.Free samples Colorful food grade silicone O ring 1.Material:100% food grade silicone2.Meet ISO9001,ISO14001 ... , 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 quality, reasonable price, reliable service and ...