Crimp-top Vials,Aluminum Caps and septa, Wide opening ND11 100pcs/pack. pre-slit white PTFE/red Silicone septa Φ11*1mm temperature resistant -60℃-200℃. pre-slit red PTFE/white Silicone septa Φ11*1mm temperature resistant -60℃-200℃. pre-slit white PTFE/red Silicone septa, 11mm crimp-top aluminum cap, 5.5mm centre hole.