Apr 8, 2021 · Crimp Vials are commonly used as a GC Vial for gas chromatography analysis. Crimp Vials are the gold standard when concerned with sample evaporation. Crimp Vials are also required when chain-of-custody or tamper-proof closures are required. When using crimp vials, we recommend the electronic vial crimper for ergonomic crimping of your GC vials.