PTFE/red rubber septa 2ml crimp top vials with high quality. Thermo Scientific™ 2mL 11mm Clear Crimp Top Vial Kit w/ I-D . Description. Save time during sample preparation and reduce the risk of contamination using Thermo Scientific™ 11mm Crimp Top Clear Vial Convenience kits (Unassembled). Each kit includes 100 clear glass vials and 100 crimp top caps with pre-assembled septa. high quality crimp 10mm hole clear ultra low bleed ptfe septa