PTFE Coated Silicone Septa Pkg. 100 | PerkinElmer. Injection Port Septa PTFE Coated Silicone Septa for 20 mm Headspace Vials, Pkg. 100 PTFE Coated Silicone Septa, with 3 mm thickness, have been designed to be used with 20 mm Headspace Vials. true false Part Number List Price Your Price Quantity B0098591 168.00 USD Login to view your price