... food grade silicone O ring 1.Material:food grade silicone safe for baby 2.Certificates:ISO,FDA 3.Free samples Colorful food grade silicone O ring 1.Material:100% food grade ... silicone2.Meet ISO9001,ISO14001 directive3.Dimension: OD28.5MM, ID: 21.5MM4.8 color in stock (light purple, white,light rose,baby ... Applications: Used as adapter ring for baby kits7.High quality, reasonable price, ...