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 702646 CenterGuide BTO Septa N 9 74,51 € 8010-0230 CL BTO inlet septa 17mm 48pk 155,61 € 702632 High temperature septa N 17 HT, red 153,15 €