9mm Blue Screw Closure with Red PTFE/White Silicone/Red PTFE Septum, 100-pk

These premium 9mm blue screw closures feature a tri-layer Red PTFE/White Silicone/Red PTFE septum, engineered for superior chemical resistance and reliable sealing in chromatography applications. Ideal for use with 9mm screw thread vials in HPLC, GC, and autosampler systems, this closure system ensures sample integrity while providing excellent resealability for multiple injections.

• P/N: 4400-53B
• Closure Size: 9mm screw thread configuration for universal autosampler compatibility
• Septum Construction: Tri-layer Red PTFE/White Silicone/Red PTFE for optimal chemical inertness and self-sealing properties
• Package Quantity: 100 closures per pack for efficient laboratory inventory management
• Chemical Resistance: PTFE layers provide excellent resistance to aggressive solvents and prevent sample contamination
• Applications: Suitable for HPLC, GC, LC-MS, and general analytical chemistry workflows