Autosampler Vials, Caps, and Closures - aijiren Tech Sci Use these 11 mm clear glass vials with snap caps or aluminum crimp seal closures. 4 aijiren Techbrand™ Certified Vial Kit 9mm short thread, Clear Glass, 1.5mL, PP Screw Cap, Center hole, Silicone/PTFE septum Certified Kit, Includes 100 vials and 100 caps with pre-assembled septa.