11.5 mm OD BTO premium High-Temp Center Guide GC Septa, 25/pk

Maximum temperature 400 deg. C (330-350 deg. C for 17mm size). BTO is Bleed and Temperature Optimized for the most demanding GC and GC/MS applications. Septa BTO is formulated to extend low-bleed and outstanding mechanical properties or premium GC septa to the highest-temperature applications. 11.5 mm diameter, 3 mm thick. CenterGuide™ design requires less force for initial penetration, for a smoother feel. Septum life may be enhanced in some applications by minimizing tearing and coring