Ningbo Zhongli John Seals Co., Ltd.
Ningbo Zhongli John Seals Co., Ltd. (formerly Fenghua Zhongli Seals Co., Ltd.) was established in 2000, specializing in the design and manufacture of various mechanical seals and sealing materials. Our products mainly include rubber bellows seals, metal bellows seals, O-ring mechanical seals, flygt pump series, grundfos pump seals and cartridge seals. Some mechanical seal produced by Zhongli have become excellent replacement for mechanical seals, such as Alfa-Laval, John Crane, Grundfos, EagleBurgmann, Vulcan, Roten, Chesterton, Flowserve, etc.
Focus on quality, we are the most professional specialist in the replacements of mechanical seals
Since 2000, China leading mechanical seal manufacturer. Top seal brand
in China, definitely not just CHEAP. We provide one-stop and
cost-effective solution for your mechanical seals.
Advanced computational facilities and tools are used to design and
optimize seal performance. Combination with an extensive test program,
excellent quality mechanical seals keep your equipment running longer.
We supply all kinds of replacement mechanical seals for John Crane, Burgmann, Flygt mechanical seals, Grundfos pump mechanical seals etc. Large scale production and well trained workers reduce cost greatly, Bottom Price makes you become the most competitive seller in your market.
Advanced equipment and production line, well trained workers produce 5 million mechanical seals per year. We can have your urgent order in short time.
Our custom design service may eliminate the common faults found in some original industry standard types of mechanical seals through improved design, technology and material quality.
Top sales with professional skills make you feel easy to communicate
with a factory. We don’t see ourselves as a supplier but as a business
partner, working alongside customers to deliver added value throughout
the supply chain and beyond.
ZLSEALS mechanical seal is widely used in the field of chemistry. These
fluid in chemical enterprises are generally corrosive and flammable,
which will not only affect the normal operation of the machine, but also
cause serious harm to the surrounding environment, people's life, and
health, and even cause fire accidents and explosions. Therefore, we must
attach great importance to the application of mechanical seal chemical
In recent years, with the rapid development of modern industry, the oil
and gas industry, as an important industry which is related to the
comprehensive strength of the country, has developed very rapidly. At
the same time, the oil and gas enterprises have made certain progress in
the scale and technical level of their equipment. The mechanical oil
and gas seal(dry gas seal and wet gas seal) also has become one of the
most important research topics. At the same time, people are getting
more and more attention on this part.
The mechanical seal is widely used in pulp and paper industry. The
excellent sealing performance is one of the important factors in the
high-efficiency operation of the pulp and paper industry and the
chemical industry. In recent years, the mechanical seal technology of
pulp and paper industry and chemical industry is developing constantly.
It is of high theoretical value and practical significance to summarize
and analyze the use of mechanical seal technology to better guide
With the rapid development of the international economy, the increase of
population and the improvement of people's living standards, and the
acceleration of industrialization and urbanization, water consumption
has increased dramatically. Meanwhile, the discharge of sewage has
increased correspondingly, which has exacerbated the shortage of fresh
water and the pollution of the water environment.
With global population continuing to grow, The sustainable delivery of food to the world is a worldwide challenge. Water is at the center of this concern, as food production is the largest single consumer of water. Reducing the water footprint of food production is a central goal of the food and beverage industry. ZLSEALS can assist in optimizing and managing every stage of a production facility's water cycle and the food problem.
Marine research focuses on three central issues: maritime rights and
interests, marine resources, the marine environment. The international
struggle for the exploitation and possession of deep-sea resources is
becoming more and more intense. And the match with the deep-sea
technical strength of the competition is also increasingly prominent.
ZLSEALS mechanical seal can be used in the petrochemical industries.
We also have the certain knowledge about mechanical seals for
petrochemical industry, and the mechanical seal products are also widely
used in the petroleum industry.
The continuous development of new drugs and healthcare products has
increased the capacity of the pharmaceutical industry, but also brought
great competition. Pharmaceutical manufacturers through improved
procedures to improve the performance of their rotating equipment, and
to maintain its compliance with the specification. Lower leaks and
improved purity are two major concerns of sealed rotary equipment, both
of which complement each other.