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 702647 CenterGuide BTO Septa N 11 72,90 € 5182-3442 Microseal General Purpose starter kit 430,86 € 5183-4761-100 Septa Non-Stick Long Life 11mm 100pk 219,11 €