Nature PTFE/Nature silicone septa 22 x 3mm, pk/100 Back Catalog number: S228 Availability: In the manufacturer's stock Price on request - + Recommended 38-140 22.5mm x 0.015" PTFE Septa, pk/100 18,47 € 604040-13 12mm x 0.040" PTFE/Red Rubber Septa, pk/100 17,72 € 610050-20 19mm x 0.100" PTFE/Silicone Septa for 20mm Closure 51,88 €