Thermo Scientific™ Assembled Caps and Septa for 8-425 Standard-Opening Vials. Thermo Scientific™ National Assembled Caps and Septa for 8-425 Standard-Opening Vials are available in a variety of colors and septum materials. Manufacturer: Thermo Scientific™ C40135A. View more versions of this product. Catalog No. 03-375-18D. $243.50 / Case