... good Chemical stability Platinum-cured material USP Class VI CE certificate Medical Silicone Pipe with color line Size cusomized Durometer 50 shoreA ... USP Class VIFunction Extruded with 100% medical grade raw silicone material, the tube is with the even wall, very little size ... or base, chemical reagents, chemical, alcohol etc. Part of the material can meet the standard of ISO10993 and USP Class VI ...