Description20mm Moulded Septa Butyl, dark grey, 55° shore A, 3.0mm SpecificationsFeaturesDocuments 20mm Moulded Septa Butyl, dark grey, 55° shore A, 3.0mm Diameter (d) - mm 20 Colour Grijs Durometer 50° shore A Thickness (w1) - mm 3 Material Butyl Quantity per pack 1000 stuks in PE-zak