ALWSCI 20 mm Closure Size, Aluminum Crimp Seal with Natural PTFE/White Silicone Septa for Headspace Vial (Case of 100)
Special Features
- Aluminum seal temperature resistant from -60°C up to 300°C
- Silicone completely laminated with PTFE
- Soft liners for easy penetration
- Aluminum Cap, plain, 10 mm centre hole
- Crimp Caps squeeze the septum between the rim of the glass vial and the crimped aluminum cap. This forms an excellent seal preventing evaporation
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