4 mm x 9 mm x 1 mm (IDxODxT) Flat Copper Sealing Washers – Pack of 50 – Good for Industrial Machinery M4 Screws – Copper Flat Ring Gaskets

The package contains 50 flat copper sealing washers of 4mm x 9mm x 1mm/ 0.16" x 0.35" x 0.04" (inner diameter*outer diameter*thickness). The flat copper sealing washer is made of durable copper material, which has good hardness and is not easily deformed. It is corrosion resistant and can be fixed for a long time in various environments. Copper flat sealing washer is widely used to reduce friction between screws and nuts to fix them more firmly. It also distributes loads and increases the bearing surface, thus ensuring a good connection with the machines. Good replacement parts for use in most machinery industries, such as various pumps, sump plugs, home and office appliances, automation equipment, electronic equipment. Can also be used in most furniture, DIY projects, etc. Please confirm the diameter of copper flat sealing washers before you buy it.