Ceramic Mechanical Seal
Ceramic material refers to inorganic non-metallic materials made of natural or synthetic compounds through forming and sintering. It has the advantages of high melting point, high hardness, high wear resistance and oxidation resistance. It is widely used in machinery, chemical industry, petroleum, pharmaceutical, automobile and other fields. Because of its advantages, it has become Sealcon’s great choice for sealing materials.
Mechanical characteristic
Ceramic material is the material with the best rigidity and highest hardness in engineering materials, and its hardness is mostly above 1500HV. Ceramics have high compressive strength, but low tensile strength, poor plasticity and toughness.
Thermal characteristic
Ceramic materials generally have high melting point (mostly above 2000), and have excellent chemical stability at high temperature. The thermal conductivity of ceramics is lower than that of metal materials. At the same time, the linear expansion coefficient of ceramics is lower than that of metal. When temperature changes, ceramics have good dimensional stability.
Electrical characteristic
Most ceramics have good electrical insulation, so a large amount of insulation is used to make all kinds of voltages (1kV~110kV). Ferroelectric ceramics barium titanate (BaTiO3) has high dielectric constant which can be used in the production of capacitor, ferroelectric ceramics. A few ceramics also have the characteristic of semiconductor, can be a rectifier.
Chemical characteristic
Ceramic material is not easy to be oxidized at high temperature, and has good corrosion resistance to acid, alkali and salt.
Optical characteristic
Ceramic materials also have unique optical properties, which can be used as solid laser materials, optical fiber materials, optical storage containers, etc. Transparent ceramics can be used in high-pressure sodium lamp tubes.Magnetic ceramics (ferrites such as MgFe2O4, CuFe2O4, Fe3O4) have a wide range of applications in recording tapes, records, transformer cores, and large computer memory components.
Mechanical seals has the high demands about sealing materials, so the ceramic is choosed to make ceramic sealsbecause of its competitive features.
|
ceramic physical property |
||||
|
Technical parameter |
unit |
95%Al2O3 |
99%Al2O3 |
|
|
content of Al2O3 |
% |
95 |
99 |
|
|
density |
g/cm3 |
|||
|
hardness |
HRA |
85 |
88 |
90 |
|
porosity rate |
% |
|||
|
fractural strength |
MPa |
250 |
310 |
350 |
|
coefficient of heat expansion |
10(-6)/K |
|||
|
thermal conductivity |
W/M.K |
26 |
||
Hangzhou Sealcon Fluid Machinery Co., Ltdproduces ceramic seal ring，ceramic shaft seal，ceramic mechanical seal，ceramic seals for water pumps，ceramic o ring，ceramic seals for pumps，ceramic pumpand hydrocarbon pump mechanical seal,contact us.
在线联系供应商
Other supplier products
 |
METAL BELLOW MECHANICAL SEALS | Metal Bellow seals are ideal for high temperature applications and harsh chemical services where elastomers cannot be used effectively. This seal t... |
 |
MECHANICAL SEALS FOR PUMP | Mechanical seal for pump is a kind of dynamic seal assembly, which is widely used on the rotating shaft. It is also known as the end seal. Consisti... |
 |
Carbon Seal | Graphite is an isoform of element carbon. In 1971, the United States studied the successful flexible graphite sealing material, which solved the le... |
 |
Rubber Seal | Rubber seal is one of the common base components in sealing device, and plays an important role in the leaking and sealing. It is composed of one o... |
 |
ELASTOMER RUBBER BELLOW MECHANICAL SEALS | Types of Elastomer Bellow Mechanical Seals Designed by single or double, Hangzhou SEALCON supply standard and OEM elastomer bellows sealto suit di... |
Same products
 |
Brewery Sludge Dewatering Machine System for Sale | 卖方: Apoaqua | Sludge dewatering machine is widely used in breweries. It can improve water quality, reduce energ... |
 |
Komatsu Charge Pump | 卖方: Elephant Fluid Power | Elephant Fluid Power: Provide Komatsu hydraulic gear pump, original OEM pump parts and auxiliary ... |
 |
Linde Hydraulic Pump Parts | 卖方: Elephant Fluid Power | We regularly stock parts for the HPR, HPV Series of Linde® pumps. Elephant Fluid Power: guara... |
 |
Low-Pressure-Variable Vane Pump | 卖方: Elephant Fluid Power | Elephant Fluid Power: Provide low pressure vane pump, We can make varies of hydraulic pumpsparts ... |
 |
Nachi Charge Pump | 卖方: Elephant Fluid Power | Elephant Fluid Power: We offer NACHI Series Charge pump. Elephant Fluid Power: guarantee quality ... |
