11mm Crimp Cap (Silver) with Septa PTFE/Silicone/PTFE, pk.100. 11mm Crimp Cap (Silver) with Septa PTFE/Silicone/PTFE, pk.100: Amazon.com: Flip Caps and Rubber Stoppers, 100 Pack, 20mm Flat Bottom Lab Vial(Amber). the 2008/2009 National Scientific Chromatography – Cromlab. Certified Target DP 2mL Clear I-D Vial. Blue. PTFE/Silicone. 100.