Septa 17.5mm for ND18, Silicone blue/PTFE white, 1,3mm, pk/100 Back Catalog number: 17021417 Availability: In the manufacturer's stock Price on request - + Recommended 5183-4760 Septa Advanced Green Inlet 5mm 50PK 98,77 € 5188-6494 QuickPick Splitless Inlet PM Kit 73,68 € 8010-0234 CL Long Life inlet septa 9mm 100pk 217,47 €