- CS: PTFE/silicone, septa max. T 200ºC. Excellent solvent resistance. Low temperature applications.r- TCS: PTFE/triple layer silicone, septa max. T 280ºC. Excellent solvent resistance. Mid/high temperature applications.r- Auto-Sep®: silicone, septa max. T 320ºC. Excellent solvent resistance, durability and resealing. Great volume or manual injection applications.r- Auto-SepT®: PTFE/silicone, septa max. T 350ºC. Excellent solvent resistance, durability and resealing. Great volume autosamplers or programmable temperature septa applications.r- HT: BTO silicone, septa max. T 400ºC. Excellent solvent resistance, durability and resealing. High temperature and low bleed applications.r- EC: silicone, septa max. T 400ºC. Excellent solvent resistance, durability and resealing. Great volume autosamplers or low temperature applications.