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China-Yixing Longly Refractories 99 Alumina Ceramic Seals
| Category | Ceramic , Oxide , Aluminum Oxide |
| Manufacturer | China-Yixing Longly Refractories Co. Ltd |
| Trade Name | |
| Port | Ningbo port,China |
| Trade Terms | FOB, CFR, CIF |
| Payment Terms | L/C, T/T, Western Union |
| Download PDF | China-Yixing Longly Refractories 99 Alumina Ceramic Seals.pdf  |
| Price | EMAIL US sales@lookpolymers.com |
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 | 3.80 - 3.90 g/cc | 0.137 - 0.141 lb/in³ | |
| Water Absorption | <= 0.0050 % | <= 0.0050 % |
| Mechanical Properties | Metric | English | Comments |
|---|---|---|---|
| Hardness, Mohs | 9.0 | 9.0 | |
| Flexural Strength | >= 580 MPa | >= 84100 psi | cold bending |
| Compressive Strength | >= 560 MPa | >= 81200 psi | Ambient |
| Thermal Properties | Metric | English | Comments |
|---|---|---|---|
| CTE, linear | 7.60 - 8.50 µm/m-°C @Temperature 25.0 - 800 °C |
4.22 - 4.72 µin/in-°F @Temperature 77.0 - 1470 °F |
|
| Thermal Conductivity | 31.0 W/m-K | 215 BTU-in/hr-ft²-°F | |
| Maximum Service Temperature, Air | >= 1600 °C | >= 2910 °F |
| Component Elements Properties | Metric | English | Comments |
|---|---|---|---|
| Al2O3 | 98.2 - 99.5 % | 98.2 - 99.5 % |
| Electrical Properties | Metric | English | Comments |
|---|---|---|---|
| Dielectric Strength | 15.0 - 16.0 kV/mm | 381 - 406 kV/in | DC Breakdown Strength |
| 18.0 kV/mm | 457 kV/in | Insulating Strength |
| Descriptive Properties | Value | Comments |
|---|---|---|
| Refractoriness (°C) | >2030 |
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