.

SiC Mechanical Seal

Silicon carbide products are classified into many kinds according to different application environment. It is generally used more mechanically. For example, silicon carbide is an ideal material for silicon carbide mechanical sealbecause of its good chemical corrosion resistance, high strength, high hardness, good wear resistance, small friction coefficient and high temperature resistance.

Silicon Carbide SealMaterial

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.

Types of Silicon Carbide Seal Rings

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.

Mechanical Sealing Material

Rubber Seal

Stainless Steel Seal

PTFE Seal

Carbon Seal

Ceramic Seal

SiC Mechanical Seal

TC Seal

Sic Seal Material Property

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

25

1000

57% HNO3

Test Environment: 125-300 hours of immerged testing, continuously stirred

There are many top mechanical seal manufacturers, but Sealconare one of the best choices for you. we provide quality mechanical sealsand etc. Fortypes of mechanical sleeve or more information, please feel free to contact us!



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