About us

YIWU GREAT SEAL RUBBER PRODUCTS COMPANY

About Us

GREAT SEAL: Your Trusted Partner for Advanced Sealing Solutions

GREAT SEAL is a leading manufacturer of precision sealing products, including oil seals, O-rings, and gaskets. We are dedicated to solving complex sealing challenges across a diverse range of industries by delivering superior product quality, optimizing costs, and providing exceptional technical support.

Our Industries Served:
We engineer reliable sealing solutions for demanding applications in:

Automotive & Motorcycle

Mining & Drilling

Agricultural Irrigation Systems

Home Appliances

Robotics & Automation

Our Commitment to Excellence:
Our operational excellence is built on a foundation of three core pillars:

Advanced Technology: With core competencies in rubber formulation, precision skeleton stamping, and in-house mold manufacturing, we ensure every product is built to perform.

Rigorous Quality Assurance: Operating under the TS16949 quality management system, our advanced production and testing equipment guarantee that all products meet strict technical specifications, physical performance standards, and practical installation requirements.

Collaborative Partnership: Our efficient teamwork enables clear communication and comprehensive technical support, ensuring we fully understand and address your unique application needs.

At GREAT SEAL, we don't just manufacture seals; we deliver confidence and reliability for your most critical applications.

Contact Us
Why Should You Choose Us

Factory Tour

  • Automatic Rubber Batching System | Precision Compound Feeding & Mixing
  • Automatic Lip Cutting Machine | Precision Oil Seal Trimming Equipment
  • Internal Mixer | Rubber Compound Mixing Equipment for Seal Production
  • Rubber Mixer | Industrial Polymer Mixing Equipment for Compound Preparation
  • CNC Machining Center | Precision Metal Mold Manufacturing for Rubber Seals
  • Mold Pressing | Rubber Compression Molding for Precision Seals
  • Automatic Test Systems | Precision Seal Quality Verification & Performance Testing
YIWU GREAT SEAL RUBBER PRODUCTS COMPANY

Team Style

Our Commitment to Excellence: Our operational excellence is built on a foundation of three core pillars: Advanced Technology: With core competencies in rubber formulation, precision skeleton stamping, and in-house mold manufacturing, we ensure every product is built to perform. Rigorous Quality Assurance: Operating under the TS16949 quality management system, our advanced production and testing equipment guarantee that all products meet strict technical specifications, physical performance standards, and practical installation requirements. Collaborative Partnership: Our efficient teamwork enables clear communication and comprehensive technical support, ensuring we fully understand and address your unique application needs. At GREAT SEAL, we don't just manufacture seals; we deliver confidence and reliability for your most critical applications. Contact Us  

  • Great Seal Rubber Production Company | Founded in 1992 - Legacy of Quality Sealing Solutions Description: Since our

    Since our foundation in 1992, Great Seal has been a trusted manufacturer of high-performance rubber seals, oil seals, and custom sealing solutions. Discover our 30+ years of expertise in rubber compounding and precision engineering.

  • TS16949 Certified Since 2008 | Automotive Quality Management System

    Our company has maintained TS16949 (now IATF 16949) quality management system certification since 2008, demonstrating our long-term commitment to automotive industry standards and excellence in rubber seal manufacturing.

  • National High-tech Enterprise 2021 | Innovative Sealing Solutions & R&D Excellence

    Recognized as a National High-tech Enterprise in 2021, we leverage advanced R&D and innovative technologies to deliver cutting-edge sealing solutions for automotive, industrial, and specialized applications.

  • Mann+Hummel Qualified Supplier Since 2016 | Bulk Supply Certified

    Successfully passed Mann+Hummel's rigorous supplier audit in 2016, becoming an approved bulk supplier of high-quality seals and filtration components for global automotive and industrial applications.

  • Volkswagen Beijing HQ Audit Passed | Qualified Sub-Supplier Certified

    Successfully passed the rigorous quality audit of Volkswagen Beijing Headquarters, achieving certified sub-supplier status for automotive sealing systems and components. Meeting German automotive standards for VW supply chain.

TS16949 and ISO9000 Certification

Verification Ablity

  • Metal Adhesive Dryer | Industrial Adhesive Curing Systems & Equipment
  • Cleanliness Verification System | Precision Contamination Analysis & Particle Monitoring
  • Oil Seal Abrasive Machine | Surface Finishing & Wear Testing Equipment
  • Tensile Tester | Universal Testing Machine for Materials & Components
  • Hardness Tester | Material Durability Analysis Equipment for Rubber, Plastics & Metals
  • Heat Aging Tester | Rubber & Polymer Thermal Aging Test Equipment
  • Mooney Viscometer | Rubber Viscosity & Cure Rate Testing Equipment