About US
Worldwide Provider, Unmatched Quality, Superior Customer Service
KODA is a manufacturer of oil seals, O-rings, and related sealing products. We have a 5,000-square-meter production and processing plant in Xingtai City, Hebei Province, China.
Fast and reliable service is KODA’s standard. We have over ten thousand samples and molds of oil seals, O-rings, and seals, offering one of the most comprehensive and convenient product portfolios in the industry. Our production management system is designed to ensure efficient production of every order.
In addition to our stock, we also offer custom oil seals, vulcanized O-rings, and custom molded O-rings. All oil seals and vulcanized O-rings undergo rigorous dimensional and surface treatment inspections before leaving the factory. We are ISO 9001:2015 certified and meet all requirements of this standard.
KODA boasts extensive industry experience, excellent customer service, a comprehensive product range, and expertise to meet your company and project needs. We are a certified supplier for OEM manufacturers, the automotive industry, medical devices, and industrial applications.
KODA was founded in 1999 and currently has 180 employees, including 8 senior technical engineers and 16 intermediate technical engineers. The company has imported advanced injection molding machines, precision machining equipment, fully automatic coating machines, vulcanizing machines, rubber injection molding machines, punching machines, fully automatic CNC machine tools, and related supporting facilities from Japan, providing a strong guarantee for the company’s excellent product quality. The company has passed ISO/TS16949:2009 and ISO9001:2000 certifications. Furthermore, the company has established long-term cooperative relationships with companies such as DuPont, Dow Corning, Solvay, and JSR, ensuring a stable supply of raw materials.
Main products
China's largest oil seal manufacturer
Rubber O-Ring
As a core basic sealing component, we insist on prioritizing quality, carefully selecting high-quality rubber raw materials to refine O-rings, which can be widely used in various precision instruments and equipment to achieve a more durable and reliable sealing effect.
Hydraulic seal
We can provide matching seals for all core components of hydraulic systems, including piston seals and rod seals, to provide customers with systematic and complete sealing solutions.
Engineering mechanical seal
Suitable for various large-scale engineering machinery such as excavators, loaders, tunnel boring machines, crushers, and mining machinery, providing reliable oil seal protection for heavy equipment.
Bonded seal
Suitable for various large-scale engineering machinery such as excavators, loaders, tunnel boring machines, crushers, and mining machinery, providing reliable oil seal protection for heavy equipment.
Production process
According to customer's order requirements, choose the appropriate size of the mold.
Some oil seals used for construction machinery and equipment need to have strong high pressure resistance, so a metal skeleton is required as a support.
Cut rubber for use on the outside of the metal frame.
Materials such as rubber and metal skeleton are put into the mold and heated by the machine at high temperature to bond the rubber and metal skeleton together.
The finished oil seal has excess spilled rubber that needs to be cleaned, and the impurities are removed by the machine.
The oil seals are grouped for initial packing and shipped to the warehouse.
Pack and box according to the quantity of products ordered by customers.
All the packaged goods will be sent to the Courier company to start shipping, and the customer will receive the product a few days later.
Company strength
Production area of 5000+ square meters
Warehouse area 2000+ square meters
Production equipment 50+
Production area of 5000+ square meters