13-425mm Black Top Hat Closure with PTFE/Silicone Septa, 1000-pk

This 13-425mm black top hat closure features a premium PTFE/silicone septum, engineered for reliable sample containment and repeated needle penetration in chromatography, sample storage, and analytical testing applications. The top hat design provides a secure grip for easy installation and removal, while the chemically inert PTFE liner ensures sample integrity and prevents contamination during GC and HPLC workflows.

• Thread Size: 13-425mm standard screw thread for universal compatibility with 4mL screw-top vials
• Septum Material: PTFE/Silicone composite for excellent chemical resistance and resealability
• Closure Color: Black polypropylene top hat style for easy identification and secure handling
• Quantity: 1000 closures per pack for high-throughput laboratory environments
• Applications: Ideal for autosampler vials, sample storage, GC/HPLC analysis, and environmental testing
• SKU: 806550TH-13