General description Copper sealing washers are essential components for creating leak-proof seals in various applications. These washers are designed to fit M6 screws and provide reliable sealing performance, making them ideal for automotive, plumbing, and general DIY projects. Technical specifications Inner Diameter (ID): 6mm Outer Diameter (OD): 10mm Thickness: 1mm Quantity: 100 pieces Standard: DIN 7603A