Description16.8mm Septa, Silicone cream/PTFE beige, 55° shore A, 3.2mm, for SCHOTT Screw Cap GL18 SpecificationsFeaturesDocuments 16.8mm Septa, Silicone cream/PTFE beige, 55° shore A, 3.2mm, for SCHOTT Screw Cap GL18 Diameter (d) - mm 16 Colour Crème / Beige Durometer 55° shore A Thickness (w1) - mm 3.2 Material Silicone / PTFE Quantity per pack 1000 stuks in PE-zak