200pcs 10 Specifications Sealing Ring Gaskets, M5 M6 M8 M10 M12 M14, Copper Washers Assortment Kit, Copper Metal Washers, Sealing Ring Gaskets,

【Exceptional Material】 Our metal washers are made of high-quality copper, which has good electrical and thermal conductivity, a melting point of 1083℃, and is durable for everyday use and can be reused multiple times. 【Easy to Use】 The O-rings are very easy to install. The smooth surface of the copper flat washer reduces friction between fasteners, prevents leaks, provides insulation, and prevents loosening or pressure leaks. 【Easy to Store】 These copper flat washers come with a storage box, making the sealing rings safer and more convenient to store, easy to carry, and easy to keep organized. This design will improve work efficiency. 【Wide Application】 The O-rings are perfect for water, sump plugs, fuel, and plumbing fittings. The hydraulic seal kit is perfect for electrical connections on household appliances, automotive, and marine equipment. The ring washers are really handy tools. 【What You'll Get】 The flat washers include 30 pieces M5*9*1, 30 pieces M6*10*1, 20 pieces M6*12*1,