Closure three pieces set (Cap, Star spring and Septum) Patent of Perkin-Elmer Because star spring, star septa and aluminium seal has the slit, extra pressure is released. P/N Septa Specifications Quantity Price B015-9356 Butyl Rubber Septa 100/pk ¥14,200 Send Inquiry Chat Now Perkin Elmer | Prosense Perkin Elmer | Prosense. All HPLC Vials.