... products like O rings, rubber seals, rubber band, oil seal,water seal and rubber gaskets ect.Specificationssilicone cup lid1. silicone coffee cup lid for keep fresh2. size ... of 100% food grade silicone material2.It can be used as glass lid,coffee cup lid,water cup lid,mug lid,drinking cup etc3.Nontoxic and odorless,unbreakable ...