Seal G13 for 4mL vials PTFE/silicone, pk/100 Back Catalog number: V0004-D Manufacturer: LCTech Availability: 3 weeks Price on request - + Recommended 606050B-18M/1000 17.5mmx0.060" Blue PTFE/Sil Septa for 18mm,pk/1000 375,49 € 606MSLB-11 11mm Diameter Low Bleed Yellow PTFE/Cream Silicone 22,24 € 606050-20S 19mm x 0.060" Gray PTFE/Sil Septa, pk/100 39,46 €