Technical Alumina Al2O3 Ceramic Wear Resistant Rings for Insulation Application

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Trade Term: FOB
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Basic Info.
  • Brand Name: UNIPRETEC 
  • Material: Alumina Ceramic 
  • Purity: 95% 
  • Color: White 
  • Density: 3.65g/cm3 
  • Young's Modulus: 280Gpa 
  • Flexural Strength: 280Mpa 
  • Compressive Strength: 2000Mpa 
  • Thermal Conductivity: 18-25W/(m•K) 
  • Thermal shock resistance: 220ΔT(℃) 
  • Max. Working Temperature: 1500℃ 
  • Model No.: UPT-ALC006 
  • Place of Origin: Fujian  
  • Min.Order: 50 Piece/Pieces
  • Means of Transport: Ocean, Air
Supply Capacity
  • Production Capacity: 100000pcs/year
  • Packing:wooden box/carton box
  • Delivery Date: 40days

Alumina ceramic seal rings are widely applied in mechanical and motional sealing for various types of household, agricultural and chemical pumps due to their outstanding mechanical strength,wear-resistance, chemical resistance and air tightness. Moreover, they are water-proof when the temperature changes sharply, they can meet the requirements on sliding and sealing properties in the actual use. They are widely used as mechanical sealing parts for metallurgy, machinery,chemicals, medicines, food, corrosion-resistant pumps, automobiles, pneumatic components etc. 

The alumina ceramic seal rings which Unipretec produces can reach up to ±0.01mm in surface roughness and are suitable for mirror polishing.

Technical Alumina Al2O3 Ceramic Wear Resistant Rings for Insulation Application

Material Properties:

*Thermal conductivity

*Good strength and hardness

*Good resistance to wear and corrosion

*Electrical insulation (DC to GHz frequencies)

*Temperature resistance up to 1700°C

*Mechanical and electrical properties

*Resistance to all gases except wet fluorine

*Resistance to all common reagents except hydrofluoric acid and phosphoric acid

Technical Alumina Al2O3 Ceramic Wear Resistant Rings for Insulation Application

Alumina Ceramic Procucts Include:

1.Seal rings

2.Faucet valves

3.Tube and posts


5.Nozzles for high pressure water machine



8.Plates for kiln


10.Spheres for milling

CharacteristicsUnit95 Al2O399 Al2O3ZrO2GPSi3N4BNGlass Ceramic
Crystal Structure-hexagonalhexagonaltetragonalhexagonalhexagonal-
Water Absorption%00000.0-1.00
Young's ModulusGpa28035020529567065
Vickers HardnessGpa14201218-20--
Flexural Strength @R.T.Mpa28030090065051100
Compressive Strength @R.T.Mpa2000250022002200230500
Thermal Conductivity @R.T.W/(m*k)18-25302.225201.7
Thermal shock resistanceΔ(℃)220180-200280-350450-650>150025-100
Max. Working Temperature @R.T.150017008501200960800
Volume Resistivity @R.T.Ω*cm>10^15>10^14>10^12>10^1410^1310^16
Dielectric Constant (1 MHz @R.T. )-9.59.8268.24.086.02
Dielectric StrengthkV/mm1622-1637540

Technical Alumina Al2O3 Ceramic Wear Resistant Rings for Insulation Application

About UniPreTec

UniPreTec provides high-performance ceramic products in Alumina, Zirconia, Boron Nitride, Machinable Glass Ceramic, Silicon Nitride and  further special materials. Along with these materials, we offer several machining from which to choose such as cutting, drilling, sawing, turning, grinding, polishing etc.. Furthermore, our technologies and equipments allow us to provide various and flexible forming processes, like dry pressing, isostatic pressing, extrusion, injection moulding and slip casting.

Send message to this supplier
Mr. Tony Huang (sale manager)
Tel: 86-592-5510319
Mobile: 13860446139
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Contact Method
Xiamen Unipretec Advanced Materials Co.,Ltd
RM606, NO.151 YUEHUA ROAD, HULI DISTRICT, Xiamen, Fujian, China (Mainland) / 361006
Fax: 86-592-5510320
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