10mm Wide Opening Screw Caps and Septa feature a 10-425 thread finish and are available in an assortment of styles to match your application needs. Shop Thermo Scientific™ 10mm Thermo Scientific™ 10mm Autosampler Vial Screw Thread Caps Light Blue; Septa: Red PTFE/White Silicone—Star-slit Thermo Scientific™ 10mm Autosampler Vial Screw Thread Caps | Fisher Scientific