Aug 30, 2021 · Caps/septa, crimp, silver aluminum, 11 mm, PTFE/butyl septa, 100/pk. Cap size: 11 mm A-8010-0051 $49.99 Aijiren 2 mL crimp top vials are constructed from Type 1 borosilicate glass, with low metal content, to protect your sample from destabilizing or leaching.