shanghai hongsheng auto Co., Ltd. Is an experienced rubber O ring producer in China. The rubber seal products include O-ring, X-ring, back up ring, E D-ring, V-ring, gasket, bonded seal and customized rubber seal, etc. The sizes cover AS 568, JIS, BS1516, DIN and Metric. We have in -house tooling workshop for the customized size to absorb the development costs and would assist with design & technical difficulties in high efficiency and quality.  

The rubber compound covers the NBR, FKM/Viton, Silicone, HNBR, EPDM, Aflas, FFKM and others, which is original from 3 M, DuPont, Bayer and Dow Corning and the other world brand suppliers, the material has strict batch traceability in ERP system. The rubber property is tested by the advanced equipments in our own laboratory to secure the vary application with about 1200 kinds of solution.  

We have about 300 employees and stick to meet the American and European quality standard. TS16949 RoHS, Reach and NORSOK M710 certifications guarantee. With long term customer relationship in mind, we always keep the consistently high standards in services and quality products to ensure complete satisfaction. Our business reaches the U S A, Canada, European, Asia and the other corner in the world. Our products are applied in automobile, chemical, electrical industry and electronics, hydraulics and pneumatics, machine builders, petrol and allied industry, power industry, incl nuclear, off shore, solar, oil and gas, etc

More than 35000 sizes without tooling charge and Mini MOQ requirement in the lead time of 5~25 days for o ring are our characteristic services. The true value you will find inside our company is the team of people that work to serve you. Biblically based principles such as Integrity, Ethics, Honesty and a caring attitude have made us a company you can trust and enjoy working with. You are appreciated to do the business with us. Choose Xlong, choose the reliable quality.