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Alumina 300Gpa φ47mm Ceramic Mechanical Seal

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Alumina 300Gpa φ47mm Ceramic Mechanical Seal

Alumina 300Gpa φ47mm Ceramic Mechanical Seal
Alumina 300Gpa φ47mm Ceramic Mechanical Seal

Large Image :  Alumina 300Gpa φ47mm Ceramic Mechanical Seal

Product Details:
Place of Origin: Suzhou China
Brand Name: Jingci
Certification: RoHS
Model Number: JCMF007
Payment & Shipping Terms:
Minimum Order Quantity: Negotiation
Price: Negotiable
Packaging Details: carton box 225mm*215mm*225mm
Delivery Time: 5-8 workdays
Payment Terms: L/C, T/T
Supply Ability: 30000pcs per 45 days

Alumina 300Gpa φ47mm Ceramic Mechanical Seal

Name: Ceramic Mechanical Seal Material: Alumina
Size: Φ47mm Density: Alumina 3.7-3.9g/cm^3; Zirconia ≈6g/cm^3; Silicon Carbon ≈3.14g/cm^3
Vickers Hardness: Alumina 1800-2000 HV; Zirconia ≈1300 HV; Silicon Carbon ≈2500HV Fracture Toughness: Alumina ≈5 (Mpa M1/2) ; Zirconia 7 (Mpa M1/2)
Compressive Strength: Alumina >3200 (Mpa Psi*103); Zirconia ≈3900 (Mpa Psi*103);Silicon Carbon 2200 (Mpa Psi*103) Thermal Expending Coefficient: Alumina 7.8-8.2 (1*10^-6/℃);Silicon Carbon ≈4.5 (1*10^-6/℃)
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Φ47mm Ceramic Mechanical Seal


300Gpa Ceramic Mechanical Seal


Φ47mm ceramic seal ring

Ceramic Seal Part Alumina Ceramic Mechanical Seal Ring Anti-abrasion




Part Name: ceramic pump seal/zirconia seal plate

Specifications: φ47mm*H1.5mm

Materials: Yttria-stabilized zirconia

Yttria-stabilized zirconia (YSZ) is a ceramic in which the cubic crystal structure of zirconium dioxide is made stable at room temperature by an addition of yttrium oxide. After shaping and sintering, Yttria-stabilized zirconia’s hardness reaches HV2500, and has good properties as wear resistance, anti-corrosion, high temperature resistance, as well as excellent finish surface.




Powerful interatomic bonds endows zirconia ceramics not only with high hardness and wear resistance, but also a resistance to corrosion. Usually it has less hardness and brittleness than that of alumina ceramic, but has more elasticity, which means it is not as brittle as alumina ceramic. If hardness is not so exacting, zirconia parts are a good choice to be applied.


Detailed Product Description
Ceramic 95%  
Fundamental properties High hardness, good wear resistance under abrasion,low electrical conductivity,good value for money
Main component 95% Al2O3
Gross density 3.7g/cm^3
Flexural Strength 400 Mpa (Psi*103)
Compressive Strength 3100Mpa (Psix103)
Fracture Toughness 5 Mpa m1/2
Young’s Modulus (dynamic)/Elasticity Modules 300 Gpa
Vickers Hardness 1500-2200 HV
Thermal Conductivity 28 W/mK
Coefficient of Linear Expansion
7.5 10^–6 K–1
Maximum Operating Temperature 1400 ℃
Thermal Expanding Coefficient 7.5 (1x10^-6/℃)
Thermal Shock Resistance 250℃ Tc
Disruptive Strength KV/mm,DC ≥20
Acid Resistance mg/cm^2 ≤0.7
Alkali Resistance mg/cm^2 ≤0.2
Wear Resistance g/cm^2 ≤0.1
Dielectric Strength 9.0 εr(20℃ ,1MHz)
Dielectric Constant 9.2 1MHz 25°
Tensile Strength 51KN
Volume Resistivity >10^15 100°
Water Absorption 0
Specific Heat Capacity 0.78x10^3 J/(kg.K)


Advantages of zirconia parts:


·High wear, heat, pressure, and chemical attack resistance (gas and liquids)

·Extreme hardness

·Excellent electrical insulation

·Relatively lightweight




Because zirconia has good properties of elasticity module and high hardness, as well as the above good properties, the parts made from zirconia are often used as mechanical or pump seal plate or disc.


About Us


Suzhou Jingci Super Hard Materials Co., Ltd has specialized in precision ceramics for more than twenty years and has rich experiences in designing and developing technical ceramic solutions for a wide variety of applications. Jingci has the capability to provide customers with expertise to make sure the best design and materials are made for their specific application and needs


Contact Details
suzhou jingci super hard materials co.,Ltd

Contact Person: Mrs. Wang

Tel: 18862487753

Fax: 86-0512--66952686

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