JG Finneran 13-425 mm Black Open Hole Polypropylene Closure, PTFE/Silicone/PTFE Septa, 0.040", 10 x 100 pc/PAK

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