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O-Ring Mechanical Seals 
Elastomer Bellow Mechanical Seals 
PTFE Wedge Mechanical Seals 
Cartridge Mechanical Seals 
Metal Bellow Mechanical Seals 
Silicon Carbide Materials 
Tungsten Carbide Materials 
Sintered Graphite Materials 
Auxiliary Seal Materials 
Special Mechanical Seals 
Stationary Seat Structure 
Aluminum Titanate 
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Ningbo Zhongli John Seals Co.,Ltd.
Fenghua Zhongli Seals Co.,Ltd

AddNo.123 Yuanzhong RD.Tengtou Industrial Zone,Fenghua,Zhejiang 315503,China.
Tel: +86-574-88911322
Fax:+86-574-88952096
Email: sales@zlseals.com
Web:
http://www.zlseals.com

General Manager:
Fang Xicheng     
E-mail: 
fang@zlseals.com

 
 Company introduction  Current Location:Home - About Us - About US
 
Company introduction
 

Ningbo Zhongli John Seals Co.,Ltd.(Fenghua Zhongli Seals Co.,Ltd) is a manufacturer specialized in design, producing and sale mechanical seals and sealing materials. Company was established in 1993 and covering 19500 square meters. We have complete production lines of mechanical seals and sealing material of silicon carbide and graphite. Annual production ability is exceed 2 million sets.
We have developed many series mechanical pump seals and cartridge seals, applied in petrochemical, food, automobile and mechanical industry etc. Products designed to meet DIN24960 and ISD3069 standards. We have passed ISO9001 quality management system, to ensure that the quality control strictly. Products sold to domestic and overseas markets, and have a strong sales and technical service support.
Reasonable price, good service and timely delivery, make us more competitive in the international and domestic markets, to provide better guarantee of product quality.



Company history:
2000, The first production line of reaction bonded silicon carbdie put into operation.
2004, Company got ISO9001 quality system certification.
2004, Company owns self import and export license. It is the second imp.& exp. license in
the seal industry in Fenghua local.
2006, Cooperation with the Ningbo University, to cooperate many research projects, our
factory is State key laboratories in new functional materials and preparation Science. Also it is technology innovation base with Ningbo University of Material Chemistry Engineering.
2007, won self-directed innovation Scientific and Technological Achievement Award.
2008--2009, research project in silicon carbide of coarse-grained material once reaction
sintering methods.  and invite professor guidance in Ningbo University materials chemistry, and achieved invention patents. Number is ZL200910097771.6.
2009, development cartridge seal, sleeve and Calcining petroleum coke.
2010 cooperate with Ningbo University to invent and research in a silane boric acid and two-component coupling agent silicon carbide manufacturing methods.  A patent for invention are applied. application number 200910226310.4.
2011, development labyrinth seal for marine pump, mechanical seal for slurry pump,  mechanical seal for sewage station high-power pump,double mechanical seals.
2012, Won Enterprise Engineering Center in Fenghua.