silicone rubber tubes pass FDA 1.Terials:NBR,silione,NR,SBR,etc 2. ... types and color are available 3.Good quality silicone rubber tubes pass FDA 1.Terials:NBR,silione,NR,SBR,etc2.types ... of O-ring,E-type,U-type,etc,can make on you size3.Different sizes of ... /T11) Time for producing samples: 3 - 15 days silicone rubber tubes pass FDA