Thermo™ 11mm Black Snap Cap with PTFE/Silicone Septum, 100-pk

These Thermo™ 11mm black snap caps feature a premium PTFE/silicone septum designed for reliable sealing in autosampler vial applications. The PTFE-faced silicone septum provides excellent chemical resistance and low extractables, making these caps ideal for GC, HPLC, and LC-MS analytical workflows where sample integrity and reproducibility are critical.

• Septum Material: PTFE/Silicone composite for superior chemical inertness and resealability
• Cap Size: 11mm diameter with snap-on closure for quick, secure sealing
• Cap Color: Black for easy sample identification and light-sensitive applications
• Compatibility: Designed for use with standard 11mm crimp-top and snap-top autosampler vials
• Low Bleed Formula: Minimizes background interference in chromatographic analysis
• Package Quantity: 100 caps per pack (SKU: 6ARC11ST1)