Magnetic Screw Seals ND18, Silicone blue/PTFE white, 1,3mm, pk/100 Back Catalog number: 18031309 Availability: In the manufacturer's stock Price on request - + Recommended 70216.36 10ml Headspace vial N20, amber 20.5x54.5, pk/100 29,15 € 5145TP8-20 20mm Silver Tin Plate Seal, 8mm Hole, 0.100" PTFE/ 107,59 € 18 03 1666 Screw cap ND18, silver, closed, Sil/PTFE, pk/100 Price on request