Hangzhou Sealcon Fluid Machinery Co., Ltd

SiC Mechanical Seal

properties

R-SiC

S-SiC

Porosity (%)

≤0.3

≤0.2

Density (g/cm3)

3.05

3.1~3.15

Hardness

110~125 (HS)

2800 (kg/mm2)

Elastic Modulus (Gpa)

≥400

≥410

SiC Content (%)

≥85%

≥99%

Si Content (%)

≤15%

0.1%

Bend Strength (Mpa)

≥350

450

Compressive Strength (kg/mm2)

≥2200

3900

Coefficient of heat expansion (1/℃)

4.5×10-6

4.3×10-6

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

1.5

50% NaOH

100

1000

2.5

53% HF

100

7

0.2

85% H3P04

100

8

0.2

70% HNO3

100

0.5

0.2

45% KOH

100

1000

0.2

25% HCL

100

0.9

0.2

10% HF plus

57% HNO3

25

1000

0.2


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

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  • TEL:+86-571-86959751
  • FAX:+86-571-86959791
  • EMAIL:sales@china-sealcon.com
  • ADDRESS:A1-3-603 Xixi center, Wenyi west road, Xihu district, 310012, Hangzhou, China