"Gasket Sheet" refers to gasket plate material

Material Classification
Metal Gasket Sheets
Stainless Steel Gasket Sheets: They possess excellent corrosion resistance, high - temperature resistance, and high strength. They are suitable for sealing in high - temperature, high - pressure, and highly corrosive media in industries such as chemical engineering, petroleum, and power. For example, in the pipeline connections of an oil refinery, stainless - steel gasket sheets can withstand the erosion of high - temperature and high - pressure crude oil and various chemicals.
Copper Gasket Sheets: With excellent thermal conductivity and corrosion resistance, they are often used for the sealing of equipment that requires good heat - conducting performance, such as the cylinder block sealing of engines and the connection sealing of radiators.
Non - metal Gasket Sheets
Rubber Gasket Sheets: They are inexpensive and easy to install. They have good flexibility and sealing performance and can, to a certain extent, adapt to the unevenness of the sealing surface. Common types include nitrile rubber, ethylene - propylene rubber, and fluororubber gasket sheets. Among them, nitrile rubber gasket sheets have good oil resistance and are often used for the oil pan sealing and transmission sealing of automobile engines. Ethylene - propylene rubber gasket sheets have good aging resistance and water resistance and are suitable for the sealing of some outdoor equipment or pipelines in contact with water.
Asbestos - Rubber Gasket Sheets: They have relatively good temperature resistance, corrosion resistance, and sealing performance. They were once widely used for the sealing of pipelines and equipment in various industrial fields. However, due to the harm of asbestos to human health, they are gradually being replaced by other materials.
Polytetrafluoroethylene Gasket Sheets: They have excellent chemical stability, corrosion resistance, high - temperature resistance, and self - lubrication. They hardly react with any chemical substances. They are suitable for the sealing of various strong - corrosive media such as strong acids, strong alkalis, and organic solvents, and can also be used for sealing in high - temperature environments.
Metal Composite Gasket Sheets
Spiral - Wound Gasket Sheets: They are spirally and compositely wound from metal strips and non - metal strips. They have multiple sealing channels and a certain self - tightening function. They are not very sensitive to the defects of the flange - pressing sealing surface and can maintain excellent sealing performance under various harsh conditions such as high temperature, low temperature, high vacuum, and shock vibration. They are widely used for the sealing of pipelines and equipment in industries such as petroleum, chemical engineering, and power.
Metal - Clad Gasket Sheets: They use non - metal materials as the core material and are wrapped with thin metal sheets on the outside. They have the same corrosion resistance as the cladding metal and similar heat resistance. The non - metal flexible filling material enables the gasket to achieve a good sealing effect under a relatively low pressing force. They can be made into various special - shaped gaskets and are often used for the sealing of parts that are frequently disassembled.
Characteristics and Applications
Characteristics
Gasket sheets can be cut and processed according to actual needs to make gaskets of various shapes and sizes to meet the sealing requirements of different equipment and pipelines. Compared with finished gaskets, gasket sheets have advantages in terms of cost, flexibility, and applicability.
Applications
In automobile engines, they are used for the sealing between the cylinder head and the cylinder block, and between the intake and exhaust manifolds and the cylinder head to prevent the leakage of engine oil, coolant, and combustion gases.
In pipeline systems, they are used for the sealing of pipeline connection parts, such as flange connections and threaded connections, to prevent the leakage of fluids such as water, steam, oil, and gas.
In various mechanical equipment, such as pumps, compressors, and reducers, they are used for the sealing between the equipment housing and the end cover, and between the shaft and the bearing to prevent the leakage of lubricating oil and the entry of external impurities into the equipment.
"Non - Asbestos Gasket" refers to non - asbestos gaskets. The following is a detailed introduction to it:
Material Composition
Fiber Materials
Organic or inorganic fibers such as aramid fibers, carbon fibers, ceramic fibers, and glass fibers are usually used to replace asbestos fibers. Aramid fibers have high strength, high heat resistance, and good chemical stability. Carbon fibers have excellent high - temperature resistance and corrosion resistance. Ceramic fibers can withstand extremely high temperatures. Glass fibers are relatively inexpensive and have certain flexibility and corrosion resistance.
Rubber Materials
Common ones include nitrile rubber, ethylene - propylene rubber, and fluororubber. Nitrile rubber has excellent oil resistance and can effectively resist the erosion of petroleum - based lubricating oils, fuels, etc. Ethylene - propylene rubber has good aging resistance and water resistance and is suitable for environments in contact with water. Fluororubber has excellent chemical corrosion resistance and high - temperature resistance and can be used in some extreme chemical environments.
Other Additives
To improve the performance of the gasket, some other substances such as graphite, mica, and talcum powder are also added. Graphite has good lubricity and high - temperature resistance, which can improve the sealing performance and anti - adhesion of the gasket. Mica and talcum powder can enhance the strength and wear resistance of the gasket.
Characteristic Advantages
Environmental - friendly and Healthy
It contains no asbestos components at all, avoiding the harm of asbestos to human health and the environment, and meeting the environmental requirements of modern industry.
Good Sealing Performance
It has high strength and resilience and can maintain good sealing performance under different working conditions, such as high temperature, high pressure, and vibration environments, effectively preventing fluid leakage.
Chemical Corrosion Resistance
It has good tolerance to various chemical substances and can resist the erosion of acids, alkalis, salts, organic solvents, etc. It is suitable for the sealing of equipment and pipelines in contact with corrosive media in industries such as chemical engineering, petroleum, and pharmaceuticals.
High - Temperature Resistance
Some non - asbestos gaskets can withstand high temperatures and can maintain stable performance in high - temperature environments, replacing asbestos gaskets for the sealing of high - temperature equipment such as boilers and steam pipelines.
Good Processability
It can be made into gaskets of various shapes and sizes through various processing methods such as molding, stamping, and cutting to meet the sealing needs of different equipment and pipelines.
Application Fields
Automotive Industry
It is used for the sealing of parts such as the cylinder block, intake and exhaust manifolds, transmission, and oil pan of automobile engines to prevent the leakage of engine oil, coolant, combustion gases, etc.
Petrochemical Industry
In the processes of oil refining and chemical production, it is used for the sealing of equipment such as pipeline connections, reaction kettles, pumps, and valves, and can resist the erosion of various petroleum products, chemical raw materials, and corrosive media.
Power Industry
It is suitable for the sealing of equipment such as steam pipelines, steam turbines, and generators in power plants, ensuring no leakage in high - temperature and high - pressure steam environments.
Machinery Manufacturing Industry
For the sealing between the housing and the end cover, and between the shaft and the bearing of various mechanical equipment such as compressors, reducers, and fans, it can prevent the leakage of lubricating oil and the entry of external impurities into the equipment.
Construction and Pipeline Engineering
In the pipeline connections of building water supply and drainage systems and HVAC systems, non - asbestos gaskets can play a sealing role to prevent the leakage of media such as water and steam.