Description
Thermo™ 20mm PTFE/Silicone Septum for Sample Storage Caps, 100-pk
These premium Thermo™ 20mm PTFE/Silicone septa deliver reliable, contamination-free sealing for sample storage vials and headspace applications. The dual-layer construction combines the chemical inertness of PTFE with the excellent resealing properties of silicone, making them ideal for GC, HPLC, and mass spectrometry workflows where sample integrity is critical.
- 20mm diameter with PTFE/Silicone composite construction for broad chemical compatibility
- PTFE layer faces sample to prevent contamination and minimize extractables
- Silicone backing provides superior needle penetration and resealing capability
- Compatible with standard 20mm crimp-top vials and headspace applications
- Suitable for temperatures ranging from -60°C to +200°C
- Convenient 100-pack quantity for high-throughput laboratory environments
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