These discs ensure air-tight, inert seals. They are specifically designed to combine the resealability of silicone with the inertness of PTFE.

• Easily penetrated with standard syringe and CC needles
• PTFE layer is 0,25 mm thick to ensure protection

These discs reseal instantly puncture after puncture, and the PTFE coating is structurally bonded so that no cement is leached or baked out of your sample after needle penetration.