Ningbo Quantum Seal Co., Ltd.
Ningbo Quantum Seal Co., Ltd.
🇨🇳 China, Zhejiang
200051-100 peopleManufacturer/Trading CompanyNingbo Quantum Seal Co., Ltd., operating under the brand QuanSeaL®, is a specialized manufacturer and trading company based in Yuyao, China. Established in the early 2000s, the company has grown into a professional provider of high-performance sealing solutions, operating a 6,500 square meter facility equipped with advanced CNC machines, PTFE moulding equipment, and sinter furnaces. With a workforce of approximately 50 to 100 employees, the company maintains a strong focus on research and development, achieving an annual output value between US$5 million and US$10 million.
The company specializes in the development and production of PTFE (Polytetrafluoroethylene) products designed to withstand extreme temperature, wear, pressure, and chemical exposure. Their extensive product portfolio includes Spring Energized PTFE Seals, rotary shaft lip seals, PTFE O-rings, backup rings, piston rings, and specialized components like PEEK ball valve seats and UHMWPE seals. These products serve critical applications in automobile engines, power steering gears, industrial pumps, reaction kettles, and blending machines.
As a contract manufacturer and ODM provider, Ningbo Quantum Seal offers comprehensive customization services, including design-based and sample-based production. Their commitment to quality is demonstrated through IATF 16949 and ISO 9001 certifications, supported by a dedicated QA/QC team and rigorous testing protocols. The company has established a significant international presence, exporting its sealing solutions to major markets across North America, Europe, and Asia, and has been recognized as a supplier for institutions such as the Changchun Automobile Institute.
OEM manufacturerOffers OEM services for customized brand manufacturing.
ODM manufacturerProvides ODM design and manufacturing solutions.
Industry association memberMember of IATF 16949, ISO 9001 association.
Established brandFounded in 2000, with over 20 years of industry experience.
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PTFE SEAL PTFE Diaphragm
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SPRING PTFE SEAL HSS
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Quanseal PTFE Spring Seal LWL-R Size 1-1900
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PTFE Back-Up Ring for Mechanical Applications PTFE Seal
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PTFE SEAL Ptfe Backup Ring Spiral
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Certifications
IATF 169491
ISO 90011
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Ningbo Topstar Mechanical Seal Co., Ltd.
🇨🇳 China
200911-50 peopleManufacturer/Service CompanyOEM manufacturer
ODM manufacturer
Product customization
Multinational enterprise
Key customer
AES
Key market
🇺🇸 United States
Description
Ningbo Topstar Mechanical Seal Co., Ltd. is a manufacturer and service company based in Ningbo, China, specializing in the development and manufacturing of mechanical seals. Established with 11 to 50 employees, the company operates a factory and offers contract manufacturing services. They specialize in a wide range of mechanical seals, including FLYGT Seals, Cartridge Seals, Bellow Seals, Pump Seals, Shaft Seals, Metal Bellow Seals, O-Ring Mechanical Seals, Carbon Seals, Tungsten Carbide Seals, Silicon Carbide Seals, and OEM Mechanical Seals. Their products are designed to be interchangeable with major brands such as Johncrane, Burgmann, AES, Pacific seals, and Flygt Pump seals. Utilizing high-quality materials like Tungsten Carbide and Silicon Carbide, Ningbo Topstar Mechanical Seal Co., Ltd. also provides custom design and manufacturing of special parts based on customer-specific requirements. The company implemented an ISO 9001 (originally ISO 9000) quality management system in 2001, demonstrating a commitment to high product quality and reliability. They expanded their international presence by opening a sales and service office in Connecticut, USA, in 2010, and are recognized for good service and on-time delivery.
Mechanical Seals (TFU & TFL-22mm)
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Mechanical Seals (TP 21)
Mechanical Seals (TP 24)
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Mechanical Seals (TP G)
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Ningbo Industry Seals Factory
🇨🇳 China
198551-100 peopleManufacturer/Trading Company/OTHEREstablished brand
ODM manufacturer
Industry association member
Key market
Asia
Description
Ningbo Industry Seals Factory, established in 1985, is a leading manufacturer and trading company based in Ningbo, China, specializing in the design, development, and manufacturing of mechanical seals. With a factory covering 6940 square meters and a team of 51 to 100 employees, including experienced engineers and technicians, the company has established itself as one of the largest mechanical seals bases in China. They produce a wide range of mechanical seals, including rubber bellow, metal bellow, O-ring, and cartridge mechanical seals, as well as sealing materials such as silicon carbide, tungsten carbide, ceramic, and carbon rings. Their products adhere to international standards including DIN24960, ISO3069, API610, API682, EN12756, and GB6556-94. Ningbo Industry Seals Factory holds ISO 9001 certification and a Mechanical Seals Production License, ensuring high-quality products for diverse applications in industries such as petroleum, chemical, electric power, metallurgy, and automotive. The company offers contract manufacturing services and exports its products to over 30 countries across five continents.
Mechanical Seal (-20~110)
Mechanical Seal for Industrial Pump
Mechanical Seal for Water, Oil and Other Low Corrosion Liquid (-20~200)
Mechanical Seals
Mechanical Seal for Rotating Equipment
Mechanical Seal for Water, Oil and Other Low Corrosion Liquid (-30~220)
Mechanical Seals
Mechanical Seal for Submersible Pump and Sewage Pump
