Crimp Vial with Insert Supplier--Aijiren Vials for HPLC/GC Aijiren Crimp Top vials are standard sample vials for GC and HPLC. The crimp cover provides the tightest seal and reduces the chance of sample evaporation. 12X32mm crimp vials and 11mm aluminum crimp caps are very economical, cost-saving and easy to use crimping tools. Get Price.