Autosampler Vial Crimp Caps. Thermo Scientific™ 11 mm Autosampler Vial Crimp Caps. Minimize contamination from handling with pre-assembled caps and septa; compatible with most HPLC and GC autosamplers. Pricing and Availability. Fisherbrand™ 20mm Crimp Seal, Silver, Aluminum Cap, 10mm Center Hole, Assembled Septum.