Technical Support Customer Service. Minimize contamination from handling with convenient, pre-assembled Thermo Scientific™ 11 mm Autosampler Vial Crimp Caps, compatible with most HPLC and GC autosamplers. Choose from Thermo Scientific™, National™ or Chromacol™ brands. PTFE/Red Rubber Septa; Silver Aluminum Seal; 1000/Cs.