General description Copper sealing washers are essential components for creating leak-proof seals in various applications. This pack contains 100 pieces of M8 copper sealing washers, designed to provide reliable sealing performance in plumbing, automotive, and other mechanical assemblies. Technical specifications Inner Diameter (ID): 8mm Outer Diameter (OD): 14mm Thickness: 1.0mm Standard: DIN 7603A Quantity: 100 pieces