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 8010-0226 CL BTO inlet septa 11.5mm 100pk 193,00 € 8010-0203 CL Adv Green inlet septa 9.5mm 50pk 108,62 € 702619 High temperature septa N 9 HT 94,30 €