Premium 20mm Crimp Magnetic Caps with PTFE/Silicone Septa

Designed specifically for high-precision analytical laboratory instruments, these 20mm magnetic crimp caps deliver exceptional sealing integrity, chemical inertness, and seamless autosampler needle penetration for GC and headspace analysis.

Key Features & Applications

• Robotic Autosampler Compatibility: Magnetic metal construction is fully compatible with CTC PAL and other robotic/magnetic arm transport systems.

• Chemical Resistance: Lined with a high-purity natural PTFE layer that faces the sample, providing superior barrier resistance against aggressive solvents and chemicals.

• Excellent Resealing: Elastic natural silicone backing ensures outstanding resealing capability after needle puncture, preventing sample evaporation and contamination.

• Standard Penetration Design: Features a 10mm center hole (open top) for smooth, guided autosampler needle access.

• Secure Crimp Neck Finish: Engineered strictly for standard 20mm crimp-neck headspace vials.

Specifications

• Product Type: Magnetic Crimp Caps with Septa

• Cap Size / Finish: 20mm Crimp-top

• Top Design: Open Top with 10mm Centre Hole

• Cap Color: Blue

• Septa Material: Natural PTFE / Natural Silicone

• Application: Laboratory GC/Headspace Chromatography Analysis

Available Pack Sizes (Select from dropdown):

• 300 pcs / pack

• 500 pcs / pack

• 1000 pcs / pack

Please note: This listing is for caps and septa only. Headspace vials are sold separately. Intended strictly for laboratory research and analytical use.