FLEX MECH-SEAL(CHINA) Co.,Ltd. is specialized in mechanical seals products including for auto cooling pump mechanical seals, for automobile air-compress mechanical seals,for pump mechanical seals and for industry pump mechanical seals. We consistently demonstrated our passion for its reputation as a reliable and stable manufacturer of superior quality products and passed ISO9001, ISO14001 & ISO/TS16949, becoming the appointed OEM suppliers of famous domestic and overseas enterprises, 80% products are exported to outside and receive respected honor.

Aluminum Oxide Ceramic

Alumina is historically the most cost-effective and widely used engineering ceramic. It has a good combination of properties:

· Good hardness and wear resistance
· High strength and stiffness
· Good thermal stability
· Almost chemically inert

Alumina can be produced in purity ranges from 95% up to 99.5% (available in ivory color), for various applications.

Parameter	Unit	99.5% Al2O3	99% Al2O3
Density	g/cm³	3.9	3.88
Hardness	Rockwell	HRA 86	HRA 85
Compressive Strength	MPa	2100	2000
Flexural Strength	MPa	350	310
Elastic Modulus	GPa	360	330
Thermal Conductivity	W / m K	29	26
Coefficient of Thermal Expansion	1 x 10 ^-6 / K	8.2	8.2

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FLEX MECH-SEAL(CHINA) Co.,Ltd.
Add: 4th floor, Block B, Jianhua Industrial Park, NO.207-208, Qi Gu Deng, Zhou Shan DongRoad, Hangzhou,China.
Factory: Jiangshan science and technology zone,yinzhou district,Ningbo China .315191
Tel: 86-571-8586-5398; Fax: 86-571-8586-5066; E-Mail: sales@mech-seal.com
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