3. Thermo Scientific™ 11mm Autosampler Vial Crimp Caps, Kombo Kit; 200 of Each Color; Silver, Blue, Green, Red, Yellow Aluminum Seals; Seal 2000 PTFE/Rubber Septa. 11mm Crimp Top Closures feature pre-assembled caps and septa to minimize contamination from handling. They are compatible with most HPLC and GC autosamplers. Pricing & Availability. 4.