... , Ozone resistance etc.Appearance of food grade silicone tube: Wall thickness of the tube is even ,smooth surface,no cracks,no air ... impurity, odourless and non-toxic.Application of food grade silicone tube: Food grade silicone tubecan be widely used in aviation, electronic ... (VITON),ACM,AEM,SBR,CR,PU etcHardness:30~90 Shore A Size Standard:AS/BS/JIS B /ISO /DIN/GB Color ...