Products 1 – 24 of 24 Aijiren Aijiren C0001012 Vial Aluminium Crimp cap 20mm With Open Top Ribbed Screw Cap with 9mm Red PTFE/White Silicone Septa 1mm 11 mm Autosampler Vial Crimp Caps – Thermo Fisher. Aluminum crimp seals with prefitted septa fit all 11 mm crimp top and snap cap vials. Must be applied with a crimping tool.