Ibis 8mm Black Screw Cap with PTFE/Silicone Septa, 100-pk

These premium 8mm black screw caps feature a PTFE/silicone septum designed to provide reliable, leak-free sealing for autosampler vials in HPLC, GC, and other chromatography applications. The chemically inert PTFE liner ensures sample integrity while the silicone backing delivers excellent resealability for multiple injections, making these caps ideal for routine analytical workflows and quality control laboratories.

• Septum Material: PTFE/Silicone composite for optimal chemical resistance and needle penetration
• Cap Size: 8mm diameter with precision threading for secure vial closure
• Color: Black for easy identification and light-sensitive sample protection
• Quantity: 100 caps per package for laboratory efficiency
• Compatibility: Designed for use with standard 8-425 threaded autosampler vials
• SKU: 4008-60A