Ceramic Mechanical Seal
Ceramic materialrefers 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 forsealing 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 sealshas the high demands aboutsealing materials, so the ceramic is choosed to makebecause of its competitive features.
|
ceramic physical property |
||||
|
Technical parameter |
unit |
95%Al2O3 |
99%Al2O3 |
99.5%Al2O3 |
|
content of Al2O3 |
% |
95 |
99 |
99.5 |
|
density |
g/cm3 |
3.7 |
3.88 |
3.9 |
|
hardness |
HRA |
85 |
88 |
90 |
|
porosity rate |
% |
0.4 |
0.2 |
0.15 |
|
fractural strength |
MPa |
250 |
310 |
350 |
|
coefficient of heat expansion |
10(-6)/K |
5.5 |
5.3 |
5.2 |
|
thermal conductivity |
W/M.K |
27.8 |
26.7 |
26 |
Tag:Mechanical Seals
在线联系供应商
Other supplier products
 |
Double Cartridge Mechanical Seals | Cartridge mechanical seal is the rotary ring, stationary ring, spring, auxiliary seal, bushings, glands, Gasket and static seal, total 7 components... |
 |
SEAL SPARE PARTS | Sealcon supplies a series of pump mechanical seal parts, which are developed and manufactured by using the latest technology. All the mechanical se... |
 |
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... |
 |
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... |
 |
ELASTOMER RUBBER BELLOW MECHANICAL SEALS | Types of Elastomer Bellow Mechanical Seals Designed by single or double, Hangzhou SEALCON supply standard and OEM elastomer bellows seals to sui... |
Same products
 |
oil seal kit | 卖方: Xingtai Nok-Cn Metal Seal Manufacturing Co., Ltd. | oil seal kit is a collection of various Oil Seals and related components designed for specif... |
 |
High-Performance Valve Cover Gasket | 卖方: Xingtai Nok-Cn Metal Seal Manufacturing Co., Ltd. | High-Performance Valve Cover Gasket Product Description: High-Performance Valve Cover Gasket... |
 |
freeze plug | 卖方: Xingtai Nok-Cn Metal Seal Manufacturing Co., Ltd. | freeze plug We not only will try our best to offer excellent services to every customer, but... |
 |
Discover the Excellence of Bonded Seals | 卖方: Xingtai Nok-Cn Metal Seal Manufacturing Co., Ltd. | Discover the Excellence of Bonded Seals Discover the Excellence of Bonded Seals Enhance you... |
 |
Fuel Injector Washer Manufacturer | 卖方: Xingtai Nok-Cn Metal Seal Manufacturing Co., Ltd. | Fuel Injector Washer Manufacturer Fuel Injector Washer Manufacturer-NNK As a professional m... |
