8-425mm Yellow Top Hat™ [Patented] Closure, Assembled with PTFE/Silicone Septa 806550TH-08Y

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.