GC septa, 9.5 mm (3/8'') OD, BTO Premium HT septa, 50 pc/PAK

BTO® (Bleed and Temperature Optimized) red-orange septa are the most widely used of the premium septa. The material and processing have been chosen to allow the BTO septa to be used at 400°C in the injection port (330-350 deg. C for 17mm size) and to provide the lowest bleed of all septa.