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 702602 Silicone septa soft , N 9 75,54 € 8010-0214 CL Adv Green inlet septa 17mm 48pk 150,68 € 702623 High temperature septa N 13 HT 107,62 €