SiC Mechanical Seal
Silicon carbide (SiC) is also known as carborundum, which is made of quartz sand, petroleum coke (or coal coke), wood chips (which need to be added when producing green silicon carbide) and so on. Silicon carbide also has a rare mineral in nature, mulberry. In contemporary C, N, B and other non-oxide high technology refractory raw materials, silicon carbide is one of the most widely used and economical materials, which can be called gold steel sand or refractory sand. At present, China's industrial production of silicon carbide is divided into black silicon carbide and green silicon carbide, both of which are hexagonal crystals with a proportion of 3.20 ~ 3.25 and microhardness of 2840 ~ 3320kg/mm2.
Silicon carbide products are classified into many kinds according to different application environment. It is generally used more mechanically. For example, silicon carbide is ideal material for SiC mechanical sealbecause of its good chemical corrosion resistance, high strength, high hardness, good wear resistance, small friction coefficient and high temperature resistance. SiC Sealrings can be divided into static ring, moving ring, flat ring and so on. SiC silicon cab be made into various carbide products, such as silicon carbide, silicon carbide, silicon carbide ring and so on, according to the special requirements of customers. It can also be used in combination with graphite material, and its friction coefficient is smaller than alumina ceramic and hard alloy, so it can be used in high PV value, especially in the condition of strong acid and strong alkali.
The following tables introduce R-SiC and S-SiC.
|
properties |
R-SiC |
S-SiC |
|
Porosity (%) |
≤0.3 |
≤0.2 |
|
Density (g/cm3) |
||
|
Hardness |
110~125 (HS) |
2800 (kg/mm2) |
|
Elastic Modulus (Gpa) |
≥400 |
≥410 |
|
SiC Content (%) |
≥85% |
≥99% |
|
Si Content (%) |
≤15% |
|
|
Bend Strength (Mpa) |
≥350 |
450 |
|
Compressive Strength (kg/mm2) |
≥2200 |
3900 |
|
Coefficient of heat expansion (1/℃) |
||
|
Heat resistance (in the atmosphere) (℃) |
1300 |
1600 |
|
Test Environment |
Corrosive Weight Loss (mg/cm2yr) |
||
|
Concentration Reagent (wt%) |
Temperature (℃) |
R-SIC |
S-SIC |
|
98%H2S04 |
100 |
50 |
|
|
50% NaOH |
100 |
1000 |
|
|
53% HF |
100 |
7 |
|
|
85% H3P04 |
100 |
8 |
|
|
70% HNO3 |
100 |
||
|
45% KOH |
100 |
1000 |
|
|
25% HCL |
100 |
||
|
10% HF plus 57% HNO3 |
25 |
1000 |
|
Sealconis a china pump supplier,we provide silicon carbide mechanical seal,silicon carbide seal rings,silicon carbide pump sealsand silicon carbide seal.
Send product request
Other supplier products
 |
Elastomer Rubber Bellow Mechanical Seals | Cost effective and mass-produced Mechanical Seal with Rubber Bellow (elastomeric bellow)Designed by single or double, Hangzhou SEALCON supply stand... |
 |
Flygt Mechanical Seals FKU-35 | Hangzhou Sealcon Fluid Machinery CO., Ltdwas established in 2011, with Sealcon trademark we specialized in high quality mechanical sealdesign, manu... |
 |
SEAL SPARE PARTS | SEAL SPARE PARTS Sealcon supplies a series of pump mechanical seal parts, which are developed and manufactured by using the latest technology. All... |
 |
Seal Spare Parts Sealing Rings | Brief Introduction of Sealing Rings The seal ring is a ring seal with the notch, it is placed in the ring groove of the sleeve, the sleeve rotates ... |
 |
FLYGT MECHANICAL SEALS | Flygt mechanical seals are usually used in the Swedish ITT Flygt mixer and submersible sewage pumps. They are one of the essential Flygt pump parts... |
