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High Temperature TAN PTFE Silicon Septa 20mm is made of superior quality metal alloy with lustrous corrosion resistant surface coating. It is used to be applied over borosilicate vials that are required in GS & HPLC for containing samples. This cap also comprises PTFE septa which allows needle penetration for sample extraction. It is completely reliable in nature and shows resistance to high temperatures. High Temperature TAN PTFE Silicon Septa 20mm offered by us has been tested on several performance parameters for assuring utmost user's satisfaction. It can easily be applied with help of handheld crimper.