Crimp/Snap Vials, Caps and Kits - Thermo Fisher Scientific. 11mm Wide Opening Crimp/Snap Top Vials. Superior quality 1st hydrolytic class glass (Type 1) in clear and amber meets all requirements of Pharm. US, EU, JPN; Aluminum crimp seals with prefitted septa for all 11mm crimp top and snap cap vials; Pre-assembled caps and septa are convenient and minimize contamination from handling