Thermo™ 13mm Black Screw Cap with PTFE/Silicone Septa, 100-pk

These Thermo™ 13mm black screw caps feature a premium PTFE/silicone septum, engineered to deliver reliable sealing performance for chromatography vials and sample storage applications. The chemically inert PTFE liner provides excellent resistance to aggressive solvents while the silicone backing ensures consistent resealing capability, making these caps ideal for GC, HPLC, and autosampler applications in analytical laboratories.

• Diameter: 13mm screw thread closure for universal vial compatibility
• Septum Material: PTFE/Silicone composite for superior chemical resistance and resealing properties
• Cap Color: Black for easy sample identification and light-sensitive applications
• Quantity: 100 caps per package for cost-effective laboratory use
• Applications: Suitable for GC, HPLC, mass spectrometry, and general autosampler use
• SKU: 6ASC13ST15