8-425mm White Open Hole Polypropylene Closure, Red PTFE/Silicone Septa, 0.050" 805050-08W

Preassembled Closure and Septa.Choose the preassembled caps with septa best suited for your application. The patented Top Hat™ septa and closure was designed to provide a positive physical lock to assure that preassembled components arrive intact.