Description. Description. Minimize contamination from handling with convenient, pre-assembled Thermo Scientific™ 11mm Autosampler Vial Crimp Caps, compatible with most HPLC and GC autosamplers. Choose from Thermo Scientific, National or Chromacol brands. Product Size. Pack of 100. Description. PTFE/Red Rubber Septa; Silver Aluminum Seal; 100/Pk.