Copper Metal Washers, Sealing Ring Gaskets, Flat Washers, O-Ring with Box for Sealing - 200 Pcs/M5 M6 M8 M10 M12 M14, Outstanding Material Our metal washers are made of high quality copper, which has good electrical conductivity, thermal conductivity, melting point 1083, and durable for daily wear and can be used repeatedly. > Easy to use O-rings are very easy to install, copper flat washer surface is smooth, reduce friction between fasteners, prevent leaks, insulate, prevent loosening or pressure leaks.< /p> Easy to store These copper flat washers are designed with a storage box, which makes the sealing ring gaskets safer and more convenient to store, easy to carry and maintain good classification. This design will improve work efficiency. Wide Application O-rings are perfect for water, sump plugs, fuel and plumbing fittings. The water seal kit is perfect for electrical connections on household appliances, appliances, automotive and marine. Ring washers are really cool tools. What you will get Flat washers include 30pcs M5*9*1, 30pcs M6*10*1, 20pcs M6*12*1, 20pcs M8*12*1, 20pcs M8*14*1, 20pcs M10*14*1, 20pcs M12*16*1, 20pcs M12*18*1.5, 20pcs M14*18*1, which is enough for daily use. lucky meet Note: The data is all measured manually, please allow 1-3cm error, due to the light and display difference, there will be some color difference, the actual object received shall prevail.