ABOUT US
Focused on R&D and Manufacturing of Core Internal Combustion Engine Parts
Technical Partners in Over 20 Countries Worldwide
Chongqing Dongxi Machinery Manufacturing Co., Ltd. (formerly Chongqing Dongxi Electromechanical Technology Co., Ltd.) is deeply engaged in the field of internal combustion engine parts, specializing in the R&D, production, and customized services of core components such as valve seat rings and valve guides, providing global customers with high-precision, wear-resistant, and long-life solutions. Products are compatible with gasoline engines, diesel engines, and other multi-scenario power systems.
Learn MoreProfessionally providing customers with internal combustion engine valve seat rings and valve guides for automobiles, motorcycles, general machinery, and construction machinery; materials suitable for leaded gasoline, unleaded gasoline, diesel, gas, and other fuels.
PRODUCTS
Focused on R&D, production, and customized services of core components such as valve seat rings and valve guides.
Valve seat ring
Valve guide
Valve seat ring
The valve seat ring is a key sealing component installed on the engine cylinder head or block.
Valve seat ring
The valve seat ring is press-fitted into the cylinder head seat hole through an interference fit, forming a sealed contact band with the valve cone surface.
Valve seat ring
The main function of the valve seat ring is to withstand high-speed impacts and seal the valve.
Valve seat ring
The valve seat ring can seal the valve.
Valve seat ring
Valve seat rings are usually made of heat-resistant alloy steel, featuring excellent high-temperature resistance and wear resistance.
Valve seat ring
The valve seat ring is a key sealing component installed on the engine cylinder head or block.
Valve seat ring
The valve seat ring is press-fitted into the cylinder head seat hole through interference fit.
Valve seat ring
The main function of the valve seat ring is to withstand high-speed impacts and seal the valve.
BLOG
Learn about our latest updates here.
2025-11-09
An Analysis of the Critical Role of Valve Seat Rings in Engines
2025-11-04
15 years of craftsmanship forging the "core"! Chongqing Dongxi Machinery's groundbreaking advancements in valve guides and seat rings powerfully enhance engine reliability upgrades.
Services and Cooperation
Customer Service: We are committed to providing customers with high-quality service, from product consultation to after-sales support, ensuring customer satisfaction.
We welcome customers from all over the country to consult and negotiate for mutual benefit.
We believe that through cooperation, we can jointly seize opportunities and create a bright future.
Contact Information
Professional Manufacturer of Internal Combustion Engine Valve Seat Rings and Valve Guides
Address: No. 7 Longtang Road, Pulu Street, Tongliang District, Chongqing
