... silicone rubber tubes pass FDA 1.Terials:NBR,silione,NR,SBR,etc 2.Various types and color are available 3.Good quality silicone ... rubber tubes pass FDA 1.Terials:NBR,silione,NR, ... -Ring,Oil seal,Rubber Seal,Rubber Gasket:Black,red,white,yellow,brown,green,vioet,etc,depending on ... Time for producing samples: 3 - 15 days silicone rubber tubes pass FDA