Copper gaskets are made of metal materials such as red copper or copper. They have good ductility and flexibility. After being preloaded, they can fit the sealing surface well, thus forming a reliable seal. Due to the excellent thermal conductivity of copper, it is often used in occasions that require rapid heat dissipation, such as engine systems, heat exchanger interfaces, etc.

Copper gaskets have excellent high temperature resistance and can generally work stably in environments up to 650℃. They are suitable for sealing media such as steam, hot oil, and compressed gas. At the same time, copper itself also has good corrosion resistance and can resist erosion by water, steam, certain organic solvents, and weak acids and alkalis.

Mechanical strength is another major advantage of copper gaskets. Compared with non-metallic sealing materials, copper gaskets are not easily squeezed and deformed and can withstand higher working pressures. It can also maintain long-term sealing stability and is particularly suitable for use in static high-pressure connections, such as pipe flanges, cylinder heads, pressure vessels, etc.

In general, copper gaskets are metal seals with simple structure but strong performance. They are suitable for industrial connection parts with high temperature, high pressure and high thermal conductivity requirements, especially in engines, heat exchangers, chemical equipment, steam pipes and other fields.

Graphite gaskets have excellent high temperature resistance. They can usually withstand high temperatures of about 550°C in air, and if they are in an inert gas or vacuum environment, their temperature resistance limit can even reach 3000°C. Therefore, it is very suitable for equipment such as steam pipelines, hot oil systems, heat exchangers and high-temperature valves.

The chemical stability of graphite is also very excellent, and it can resist the erosion of almost all acids, alkalis, organic solvents and corrosive gases. This makes graphite gaskets widely used in environments that require corrosion-resistant sealing, such as petrochemicals, pharmaceuticals, and chemical reaction equipment.

In terms of physical properties, graphite gaskets are soft and elastic, have good compressibility and resilience, and can effectively fill small gaps or surface unevenness in flange connections, thereby achieving reliable sealing. This "adaptability" makes it particularly suitable for dealing with small structural changes caused by thermal expansion and contraction or equipment aging.

In addition, graphite itself has certain lubricity and vibration damping capabilities, can maintain a stable physical form under high temperature and high pressure, is not easy to age or harden, and will not adhere to the sealing surface, making it easy to disassemble and replace later.