Seal G13 for 4mL vials PTFE/silicone, pk/100 Back Catalog number: V0004-D Manufacturer: LCTech Availability: 3 weeks Price on request - + Recommended 606050G-20 20mm x 0.060" Gray PTFE/Silicone Septa, pk/100 38,00 € on sale 604040-10F 10mm x 0.040" PTFE/Butyl Rubber Septa 24,54 € 606050G-18 18mm x 0.060" PTFE/Sil Septa, pk/100 33,20 € on sale