Pricing. 27222-U. removable center, 13 mm, diam. × opening 13 mm × 6.4 mm, for use with 2 mL - 2.5 mL standard opening crimp top vials, pkg of 100 ea. Expand. Hide. 27099-U. open center, seal diam. 11 mm, for use with 2 mL-2.5 mL standard opening crimp top vials, pkg of 100 ea.