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
Отправить запрос, связаться с поставщиком
Другие товары поставщика
 |
PTFE Seal | Polytetrafluoroethylene (PTFE), also known as teflon/teflon or plastic king, is a copolymer of tetrafluoroethylene monomer. First, it was developed... |
 |
DIN Standard Double Cartridge Seals D21 with ANSI Bore Replacing Burgman Cartex DN | Double Cartridge Seals D21 Replacement for: BURGMAN CARTEX DN Features: DIN standard ANSI bore Performance Capabilities of cartex mechanica... |
 |
PTFE TEFLON BELLOW MECHANICAL SEALS | PTFE Teflon Bellow Mechanical Sealfor Sale China PTFE Teflon Bellow sealhas been widely applied in the area of atomic energy, defense, aerospace, e... |
 |
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... |
 |
Analysis And Maintenance Scheme Of Leakage Point Of Mechanical Seal For Pump | Pump with a wide range of mechanical seals, different models, but there are five major leaks: Seal between sleeve and shaft; Seal between movable... |
Похожие товары
 |
Quick-response Mechanical seal M74N-140 for power generation | Продавец: DONGFANG YOYIK (DEYANG) ENGNIEERING CO; LTD | "Quick-response Mechanical seal M74N-140 for power generation Is YOYIK for the use of turbine uni... |
 |
Oil Seal 118*160*13 for Truck Auto Part Shaft NBR KDIK oil seal factory | Продавец: Xingtai Honglei Seal Manufacturing Co., Ltd | Hot sale various high quality Truck oil seal from Chinaleading manufacturer. Our products are eff... |
 |
Bh1941g Engine Timing Cover Seal Engine Camshaft Oil Seal | Продавец: Xingtai Honglei Seal Manufacturing Co., Ltd | A Suzuki oil sealis a mechanical seal used to seal the gaps between the rotating shaft and the st... |
 |
Transmission Oil Seal Bh4371e Tb 35*50*9.5 OEM for Toyota | Продавец: Xingtai Honglei Seal Manufacturing Co., Ltd | Automotive oil sealsplay critical roles in different types of four wheeler vehicles. They are pri... |
 |
UN Oil Seal | Продавец: Xingtai Dingtong Rubber and Plastic Products Co., Ltd | A pliable, non-metallic PU ringis ingeniously nestled within a precision-machined groove or seaml... |
