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 702632 High temperature septa N 17 HT, red 150,60 € 8010-0229 CL BTO inlet septa 17mm 24pk 96,05 € 8010-0225 CL BTO inlet septa 11.5mm 50pk 109,64 €