20mm Crimp Cap with Clear PTFE/Gray Butyl Rubber Pharmafix Septum, 100-pk

This 20mm crimp cap features a high-quality Clear PTFE/Gray Butyl Rubber Pharmafix septum, engineered for reliable sealing in pharmaceutical, analytical, and quality control laboratories. The dual-layer septum construction combines the chemical inertness of PTFE with the excellent resealing properties of butyl rubber, making it ideal for headspace analysis, GC sample preparation, and storage of volatile compounds requiring multiple needle punctures.

• Septum Composition: Clear PTFE facing layer bonded to gray butyl rubber for optimal chemical resistance and resealing capability
• Cap Size: 20mm diameter crimp-style closure compatible with standard 20mm crimp-top vials
• Pharmafix Design: Pre-assembled septum ensures consistent placement and reliable seal integrity
• Chemical Compatibility: PTFE surface provides excellent resistance to acids, bases, and organic solvents
• Package Quantity: 100 caps per pack for laboratory efficiency and inventory management
• SKU: 4570-138