20ml Headspace Vials with Aluminum Closure and Hand Manual Crimper · Crimp ND11 1,5ml Snap Ring Vial, 32×11,6mm, amber, 10 x 100 pc. Snap Ring ND11 We recommend this vial-/closure system for HPLC applications only. Vials can also be crimped with a standard 11mm Aluminum Crimp Seal, Connected chromatography solutions – Orion Scientific