silicone rubber tubes pass FDA 1.Terials:NBR,silione,NR,SBR,etc ... and color are available 3.Good quality silicone rubber tubes pass FDA 1.Terials:NBR,silione,NR,SBR,etc2. ... Ring,SealingGasket.Technical specifications:1) Usage: for charge coolant and water, on intercooler, radiator, turbocharger and supercharger, and other systems ... Time for producing samples: 3 - 15 days silicone rubber tubes pass FDA