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imagesNo. 55, Punan 3rd Road Economic Development Zone Yueqing City, Zhejiang Province China No. 55, Punan 3rd Road Economic Development Zone Yueqing City, Zhejiang Province China
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About Us

About Us

About Us

Continuous Innovation & Relentless Pursuit of Excellence

Zhejiang Lantian Mechanical Seal Co., Ltd. was founded in April 2001 and is located in Yueqing Economic Development Zone, Zhejiang Province. With 4 branch companies and offices nationwide, we are a National High-Tech Enterprise, a Hidden Champion Enterprise of Zhejiang Province, and a member unit of the China General Machinery Industry Association. We also served as the major drafting unit for the national standard GB/T 14211-2019: Test Methods for Mechanical Seals and the industrial standard JB/T 12391-2015: Mechanical Seal Technical Conditions for Flue Gas Desulfurization Pumps.

Our company specializes in manufacturing pump seals, agitator seals, side-entry agitator seals, and seal support systems. We provide high-quality, long-life, and customized mechanical seals and sealing system solutions for industries including chemical processing, power generation, metallurgy, pharmaceuticals, aluminum production, and coal washing.

Technical Advantages
01

R&D Centers

Our company has forged in-depth cooperation with Beijing University of Chemical Technology to establish a joint laboratory, which specializes in the design and R&D of high-end mechanical seals. We provide diagnosis and solutions for tough problems regarding seals and sealing systems for enterprises, as well as offer one-stop consulting, design and development services for complete sealing systems.

Zhejiang Lantian has also established an R&D center in Tianjin, recruiting senior experts in mechanical seals and sealing systems. We have built two young, dynamic technical teams dedicated to tracking technological trends and developing new products.

02

Testing Center

To verify the performance parameters of new products, we commissioned the Institute of Chemical Equipment at Beijing University of Chemical Technology to design a domestically leading agitator mechanical seal test rig and an API 682 pump seal test rig.

Technical Advantages
R&D Capabilities
Pioneer in Standard Setting
  1. Lead drafting organization for the Specification for Mechanical Seal of FGD Pump (JB/T12391-2015): Zhejiang Lantian Mechanical Seals Co., Ltd.
  2. GB/T 14211-2019 Test Methods for Mechanical Seals: Drafted by Lantian
  3. HG/T 2100-2020 Technical Specifications for Agitator Mechanical Seals: Participated in drafting and led the experimental testing section
  4. JB/T 14226-2022 Test Methods for Limiting pcv Value of Mechanical Seal Friction Material Combinations: Participated in drafting by Lantian
  5. HG/T 2269-2020 Mechanical Seals for Liquid Ring Chlorine Pumps: Led the experimental testing section；
    JB/T 8873-202X Technical Specifications for PTFE and PCTFE Blanks Filled for Mechanical Seals: Participated in drafting
Pioneer in Standard Setting

Through close collaboration with Beijing University of Chemical Technology, we are committed to creating a promising work environment with excellent mechanisms to attract and nurture the industry’s top talent.

Technical Advantages
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Qualification Certificates

Enterprise Qualifications

  • Zhejiang Province "Specialized, Sophisticated, Unique and New" SME

    Zhejiang Province

  • Machinery Industry Quality Integrity Enterprise

    Machinery Industry Quality Integrity Enterprise

  • Wenzhou's First Batch of Industry-Education Integration Sites

    Wenzhou's First Batch of Industry-Education Integration Sites

  • High-Tech Enterprise Certificate

  • Provincial High-Tech Enterprise R&D Center

    Provincial High-Tech Enterprise R&D Center

  • 7th Governing Unit of China Chemical Industrial Equipment Association

    7th Governing Unit of China Chemical Industrial Equipment Association

Award Medal

  • High-Tech Enterprise

    High-Tech Enterprise

  • Zhejiang Province “Hidden Champion” Enterprise

    Zhejiang Province “Hidden Champion” Enterprise

  • Enterprise Credit Rating AAA Grade

    Enterprise Credit Rating AAA Grade

  • Mechanical Industry High-Quality Brand

    Mechanical Industry High-Quality Brand

  • Mechanical Industry Quality Integrity Enterprise

    Mechanical Industry Quality Integrity Enterprise

  • Zhejiang Province Hidden Champion Enterprise

    Zhejiang Province Hidden Champion Enterprise

  • Demonstration Enterprise for Increasing Varieties, Improving Quality, and Creating Brands

    Demonstration Enterprise for Increasing Varieties, Improving Quality, and Creating Brands

  • Provincial High-Tech Enterprise R&D Center

    Provincial High-Tech Enterprise R&D Center

  • Wenzhou City First Batch of Industry-Education Integration Sites

    Wenzhou City First Batch of Industry-Education Integration Sites

  • Council Member of China Enamel Industry Association

    Council Member of China Enamel Industry Association

  • Council Member of China Chemical Equipment Association

    Council Member of China Chemical Equipment Association

  • Zhejiang Province Specialized, Refined, Distinctive, and Innovative SME

Enterprise Management System Certifications

  • OCCUPATIONAL HEALTH AND SAFETY MANAGEMENT SYSTEM CERTIFICATE（ISO 45001:2018）

    OCCUPATIONAL HEALTH AND SAFETY MANAGEMENT SYSTEM CERTIFICATE（ISO 45001:2018）

  • ENVIRONMENTAL MANAGEMENT SYSTEM CERTIFICATE（ISO 14001:2015）

    ENVIRONMENTAL MANAGEMENT SYSTEM CERTIFICATE（ISO 14001:2015）

  • QUALITY MANAGEMENT SYSTEM CERTIFICATE（ISO 9001:2015）

    QUALITY MANAGEMENT SYSTEM CERTIFICATE（ISO 9001:2015）

Enterprise Patents

  • Mechanical Seal Device for Enamel Reaction Kettle Operation

    Mechanical Seal Device for Enamel Reaction Kettle Operation

  • Simple-Structure Mechanical Seal Device

    Simple-Structure Mechanical Seal Device

  • Bidirectional Balanced Mechanical Seal Device for Slurry Pump

    Bidirectional Balanced Mechanical Seal Device for Slurry Pump

  • Easily Detachable Double-End Mechanical Seal Device

    Easily Detachable Double-End Mechanical Seal Device

  • Wear-Resistant and Corrosion-Resistant Mechanical Seal Device

    Wear-Resistant and Corrosion-Resistant Mechanical Seal Device

  • Strong-Corrosion-Resistant Double-End Mechanical Seal Device for Kettle

    Strong-Corrosion-Resistant Double-End Mechanical Seal Device for Kettle

  • Strong-Corrosion-Resistant Mechanical Seal Device

    Strong-Corrosion-Resistant Mechanical Seal Device

  • Simple Labyrinth Mechanical Seal Device

    Simple Labyrinth Mechanical Seal Device

  • Double-End Mechanical Seal Device with Welded Metal Bellows for Kettle

    Double-End Mechanical Seal Device with Welded Metal Bellows for Kettle

  • Mechanical Seal Device Dedicated for Mixer

    Mechanical Seal Device Dedicated for Mixer

  • Mechanical Seal Device for Enamel Reaction Kettle

    Mechanical Seal Device for Enamel Reaction Kettle

  • Mechanical Seal Device for Stirrer with Up-Down Reciprocating Motion

    Mechanical Seal Device for Stirrer with Up-Down Reciprocating Motion

  • Medium-High Temperature High-Concentration Slurry Pump Mechanical Seal Device

    Medium-High Temperature High-Concentration Slurry Pump Mechanical Seal Device

  • Strong-Corrosion-Resistant and Wear-Resistant PTFE Bellows Mechanical Seal Device

    Strong-Corrosion-Resistant and Wear-Resistant PTFE Bellows Mechanical Seal Device

  • Rotary Joint Device for Rotary Horizontal Cone Dryer

    Rotary Joint Device for Rotary Horizontal Cone Dryer

  • Strong-Corrosion-Resistant and Wear-Resistant PTFE Bellows Mechanical Seal Device

    Strong-Corrosion-Resistant and Wear-Resistant PTFE Bellows Mechanical Seal Device

  • Kettle-Use Fork Surface Drive Double-End Mechanical Seal Device

    Kettle-Use Fork Surface Drive Double-End Mechanical Seal Device

  • Mechanical Seal Device for Side Stirrer

    Mechanical Seal Device for Side Stirrer

  • Rotary Joint

    Rotary Joint

  • Slurry Pump Mechanical Seal Device

    Slurry Pump Mechanical Seal Device

  • Mechanical Seal Device for Drier with Up-Down Reciprocating Stirrer Shaft

    Mechanical Seal Device for Drier with Up-Down Reciprocating Stirrer Shaft

  • Cooling-Type Mechanical Seal Device for Fluoroplastic Pump

    Cooling-Type Mechanical Seal Device for Fluoroplastic Pump

  • Mechanical Seal Structure for High-Pressure Kettle

    Mechanical Seal Structure for High-Pressure Kettle

  • Mechanical Seal Device for Stirrer with Up-Down Reciprocating Motion

    Mechanical Seal Device for Stirrer with Up-Down Reciprocating Motion

  • Mechanical Seal for Dredger Ship Pump

    Mechanical Seal for Dredger Ship Pump

  • Condensation Seal Device Based on Mechanical Seal

    Condensation Seal Device Based on Mechanical Seal

  • Error-Correction Seal Device Based on Mechanical Seal

    Error-Correction Seal Device Based on Mechanical Seal

  • Shaft-Following Seal Device Based on Mechanical Seal

    Shaft-Following Seal Device Based on Mechanical Seal

  • Single-End Integrated Seal Structure with Free Rotation

    Single-End Integrated Seal Structure with Free Rotation

  • Bearing-Equipped Radial Double-End Mechanical Seal

    Bearing-Equipped Radial Double-End Mechanical Seal

  • Hydrostatic Dry Gas Mechanical Seal

    Hydrostatic Dry Gas Mechanical Seal

  • Mechanical Seal Device with Fastening Mechanism

    Mechanical Seal Device with Fastening Mechanism

  • Mechanical Seal Device for Stirrer Shaft End of Reaction Kettle

    Mechanical Seal Device for Stirrer Shaft End of Reaction Kettle

  • Single-End Mechanical Seal Device for Pump

    Single-End Mechanical Seal Device for Pump

  • New-Type Mechanical Seal for Kettle

    New-Type Mechanical Seal for Kettle

  • Double-End Combined Seal Device

    Double-End Combined Seal Device

  • Single-End Mechanical Seal Structure

    Single-End Mechanical Seal Structure

  • Double-End Mechanical Seal Device

    Double-End Mechanical Seal Device

  • Dry-Running Mechanical Seal for Kettle

    Dry-Running Mechanical Seal for Kettle

  • Switchable Mechanical Seal Component

    Switchable Mechanical Seal Component

  • Wave Spring Cartridge Seal Structure

    Wave Spring Cartridge Seal Structure

  • Horizontal Stirrer Mechanical Seal

    Horizontal Stirrer Mechanical Seal

  • Mechanical Seal Structure for High-Pressure Kettle

    Mechanical Seal Structure for High-Pressure Kettle

  • Online-Repairable Mechanical Seal Flushing System

    Online-Repairable Mechanical Seal Flushing System

  • Rotating Joint for Heat Collection Tube with High-Temperature Resistant Seal Structure

    Rotating Joint for Heat Collection Tube with High-Temperature Resistant Seal Structure

  • Inclined Stirrer-Type Mechanical Seal Device

    Inclined Stirrer-Type Mechanical Seal Device

  • Contact-Type Dry-Running Seal

    Contact-Type Dry-Running Seal

  • Anti-Bellows-Twist-Break Mechanical Seal

    Anti-Bellows-Twist-Break Mechanical Seal

  • Flue Gas Desulfurization Pump Mechanical Seal Structure

    Flue Gas Desulfurization Pump Mechanical Seal Structure

  • Corrosion-Resistant Bellows Mechanical Seal

    Corrosion-Resistant Bellows Mechanical Seal

  • Radial Double-End Bellows Mechanical Seal Device

    Radial Double-End Bellows Mechanical Seal Device

  • Cartridge-Type Double-End Mechanical Seal Device

    Cartridge-Type Double-End Mechanical Seal Device

  • Rotating Joint for Solar Heat Collection Tube

    Rotating Joint for Solar Heat Collection Tube

  • Solar Heat Collection Tube Rotating Joint with Elastic Compensation Structure

    Solar Heat Collection Tube Rotating Joint with Elastic Compensation Structure

  • Dry Grinding Combined Seal Device

    Dry Grinding Combined Seal Device

  • High-Speed Dry-Running Stirrer Mechanical Seal Device

    High-Speed Dry-Running Stirrer Mechanical Seal Device

  • Mechanical Seal Device with Screw Pump Effect

    Mechanical Seal Device with Screw Pump Effect

  • High-Pressure Pump Mechanical Seal Device

    High-Pressure Pump Mechanical Seal Device

  • Box-Type Combined Seal Structure for Stirring Equipment

    Box-Type Combined Seal Structure for Stirring Equipment

  • More Stable PTFE Bellows Mechanical Seal Device

    More Stable PTFE Bellows Mechanical Seal Device

  • New-Type Strong-Corrosion and Abrasion-Resistant Mechanical Seal Device

    New-Type Strong-Corrosion and Abrasion-Resistant Mechanical Seal Device

  • Strong-Corrosion and Abrasion-Resistant Mechanical Seal Device

    Strong-Corrosion and Abrasion-Resistant Mechanical Seal Device
Company Milestones

2001

2001

Zhejiang Lantian Mechanical Seals Co., Ltd. was established.

2012

2012

Tianjin R&D Center (Tianjin Xi'aowei Sealing Technology Development Co., Ltd.) was established.

2013

2013

Shijiazhuang Product Service Center was established.

2015

2015

Accredited as a Member Unit of the National Technical Committee for Mechanical Sealing Standardization of China (SAC/TC 491).

Beijing R&D and Testing Center (Huada Ruizhi (Beijing) Technology Development Co., Ltd.) was established, and a comprehensive technical strategic cooperation for development was launched with Beijing University of Chemical Technology.

2016

2016

Tianjin R&D and Production Base, Huada Lantian Sealing Technology (Tianjin) Co., Ltd., was established.

2023

2023

The digital and intelligent upgrading of the new factory building was completed as planned.

Moved to the new factory in Yueqing in September.

Tianjin Huada Lantian Sealing Technology (Tianjin) Co., Ltd. relocated to the new factory.