Supelco PTFE Silicone Septa for 7 ml Vial Cap Total of 100 Septa Caps

The Supelco 27155 provides a pack of 100 tan colored septa designed for 7 ml vials commonly used in laboratory applications. These septa are crafted from a combination of PTFE and silicone, offering both excellent chemical resistance and a pierceable surface for easy injection. They are compatible with vials that have a 15-425 screw thread cap (always double-check vial and cap specifications for confirmation). The Supelco 27155 septa create a secure seal on your vials to prevent leaks and minimize sample evaporation. The pierceable silicone allows you to inject liquids or gases through the septa using a syringe needle without removing the cap, helping to maintain a sterile environment and reducing contamination risks during sample preparation or analysis in your lab.