Thermo Scientific™ 11mm Silver Aluminum Crimp Cap, PTFE/Rubber. MSRP: Now: $16.00. Was: 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.