... when being heat, good stability, non-friable.3: good resistance to chemicals: bear acid, alkali and various chemicals.4: it is ... silicone rubber (LSR) food grade, meet the FDA requirements, non-toxic, and strong resistance to tearing, can enhance the use of Nipple ... be choking.8: transparent, bright and beautiful.9: no smell: Silicone rubber is colorless, tasteless, non-toxic raw materials, it will not ...