Application Industries
Mechanical face seal is widely used in the slow speed operation and the place required high lubrication reliablity and long working lifetime,such as mining machinery,agricultural machinery,construction machinery,heavy truck,coal cutter,tunneling machine,scraper conveyor and cultivated land machine,etc.

About Zhonghuan

Focusing on sealing technology, leading industry standards

Shanxi Zhonghuan Precision Machinery Co., Ltd. is a privately-owned high-tech enterprise specializing in mid-to-high-end floating seals. Based on assimilating advanced foreign floating seal technologies, the company has independently developed proprietary material formulations and casting processes for premium floating seals. Through sophisticated heat treatment techniques, we have successfully addressed micro-deformations in thin-walled components during production. Our materials inherently possess excellent oil adsorption capacity and superior thermal conductivity.

We have independently developed and mastered the materials and casting processes for high-end floating seals

National high-tech enterprise certification

Multiple national invention patents and utility model patents

Our products are exported to more than 30 countries and regions in Europe, America, and Southeast Asia

About Zhonghuan
Quality & Compliance

ISO certified manufacturing system

The floating seals produced by our company have good wear resistance and excellent impact resistance

Strict QC at every production stage

Self-developed
Exclusively developed high-nickel-molybdenum alloy cast iron with 22% molybdenum-chromium alloy content, far exceeding the industry average
Process Advantage
Mastered core precision casting technology for high-end floating seals, producing dense castings free of pores and sand holes
Mold Manufacturing
Complete in-house mold design and manufacturing capabilities, from drawing to finished product in just 72 hours
Full industry chain production
7,000㎡ modern production base covering the entire process: casting, rough machining, precision machining, inspection and packaging
Market Advantage
Core seal supplier for China Railway Equipment and China Railway Construction TBM equipment
Product performance
Service life equivalent to imported brands under the same working conditions, some products outperform imports

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