Feature●1. High Quality Material: This copper washer provides a tighter seal and grater thermal durability than steel and rubber washers, and has good electrical and thermal conductivity. It also achieves a melting point of up to 1083°C with high quality copper. Strong and durable. Flat washers disperse the load to prevent damage to fixed surfaces and insulate steel screws from surfaces●2. Heat Resistant & Corrosion Resistant: These tapping screws are a general purpose tool with a thick and high quality. It also has excellent heat resistance, corrosion resistance, and high hardness performance. It is sturdy and hard to break. For replacing washers (gaskets) such as oil drain bolts, it adheres to the seat of the opposite parts and bolts and nuts to prevent liquid leakage●3. Excellent Features: Copper washers use a material that is softer than iron, and can be used as a gasket for drains and oil lines. Adopts high quality copper material and the melting point can reach 328°F (1083°C). It has good electrical conductivity and thermal conductivity. Durable and long lasting. The surface is smooth and uniform stress, good air tightness, and you dont have to worry about leakage leakage. Gasket is also important for insulating steel screws from aluminum surfaces to prevent galvanic corrosion●4. Suitable for Various Occasions: When the diameter of the hole is larger than the fixed nut, a flat washer is used. Kit includes washers for a variety of purposes. Can be used as gaskets, wear pads, prepressure indicators, and locking equipment, to reduce vibration. Widely used in automotive, marine, machinery and other industries. Widely applied to flange and chemical plants, power stations, nuclear power stations, electronics, digital consumer appliances, hardware, precision equipment, appliances, appliances, bearings, air pumps, water valves, air cylinder connections, sealing electric shock therapy, high pressure brake systems●5. Specifications: Copper washer gasket set of 15 types, 280 piecesDescription