Seal G13 for 4mL vials PTFE/silicone, pk/100 Back Catalog number: V0004-D Manufacturer: LCTech Availability: 3 weeks Price on request - + Recommended V0814100 20mm Silver aluminum Seal w/Transparent PTFE/Trans 34,59 € 606050B-18M/1000 17.5mmx0.060" Blue PTFE/Sil Septa for 18mm,pk/1000 377,36 € 702101 Septa N20Mld. But/PTFE gr, 50°, 3.0 24,84 €