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China-Yixing Longly Refractories 95 Alumina Ceramic Seals

Category Ceramic , Oxide , Aluminum Oxide
Manufacturer China-Yixing Longly Refractories Co. Ltd
Trade Name
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF China-Yixing Longly Refractories 95 Alumina Ceramic Seals.pdf
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Material Notes:
LONGLY's alumina ceramic seals (alumina accounts for 95-99%) can be finished by mirror-polishing process. Because of high mechanical strength, strong chemical corrosion resistance, good air tightness, superior waterproof under temperature mutation, they are used as the mechanical seal and dynamic seal of various household water pump, agricultural pump and other chemical pump, and can meet the requirements of sliding and sealing in actual operating environment.Applications: Widely used as mechanical seal parts in the industries of metallurgy, machinery, chemical, medical, corrosion-resistant pump, automobile, aerodynamic components.Information Provided by China Yixing Longly Refractories Co. Ltd
Physical Properties Metric English Comments
Bulk Density 3.55 - 3.65 g/cc
0.128 - 0.132 lb/in³
Water Absorption <= 0.070 %
<= 0.070 %
Mechanical Properties Metric English Comments
Hardness, Mohs 9.0
9.0
Flexural Strength >= 520 MPa
>= 75400 psi
cold bending
Compressive Strength >= 500 MPa
>= 72500 psi
Ambient
Thermal Properties Metric English Comments
CTE, linear 6.50 - 7.80 µm/m-°C

@Temperature 25.0 - 800 °C
3.61 - 4.33 µin/in-°F

@Temperature 77.0 - 1470 °F
Thermal Conductivity 22.0 W/m-K
153 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air >= 1500 °C
>= 2730 °F
Component Elements Properties Metric English Comments
Al2O3 92 - 96.5 %
92 - 96.5 %
Electrical Properties Metric English Comments
Dielectric Strength 15.0 kV/mm
381 kV/in
Insulating Strength
17.6 - 20.0 kV/mm
447 - 508 kV/in
DC Breakdown Strength
Descriptive Properties Value Comments
Refractoriness (°C) >2000
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