Description19mm Septa, Butyl red/PTFE grey, 55° shore A, 1.3mm SpecificationsFeaturesDocuments 19mm Septa, Butyl red/PTFE grey, 55° shore A, 1.3mm Diameter (d) - mm 19 Colour Rood / grijs Durometer 55° shore A Thickness (w1) - mm 1.3 Material Butyl / PTFE Quantity per pack 1000 stuks in PE-zak Seals for washer bottles on the instruments.