The cap is made of high-quality aluminum material, containing a red PTFE membrane/white silica gel composite septa, which has excellent performance. After sampling, it is still sealed.
Size of the cap: Φ20mm. The diameter of center hole is 10mm.
Use PTFE and high-quality silicone rubber as raw materials to ensure that the septa is non-toxic.
The PTFE layer of the septum is in contact with reagents, has good chemical inertness, can resist acid, alkali, temperature, and adhesion. Even at high temperatures, it does not interact with concentrated acids, alkalis or strong oxidants. At the same time, it uses the elasticity of the silicone layer to ensure the sealing performance.
Kindly note: you need the 20mm crimper for ALUMINUM CAP to seal this cap.
وصف
20mm Crimp Caps with Red PTFE and White Silicone Septa for Headspace Glass Vial, 100/pk