Ningbo Yierka Seals Co., Ltd. is an enterprise specializing in producing and researching hydraulic seals. We have more than 20 years' experience in manufacturing TPU hydraulic seals and pneumatic seals. Since 1991, our company has taken technical corporations with the Sciences Academy of China, Hefei Branch and has succeeded in turning our series of hydraulic seals to be used in mine, hydraulic system, plastic jetting machinery and engineering machinery.Our company has abundant technology, senior research fellows and advanced physical and chemical labs. We can produce according to the polyurethane, polytetrafluoro and rubber samples provided by customers both standard and anomaly. Our every property target of products is corresponded to the quota of international. They can wholly replace the imported ones. Our products have been exported to countries and regions all over the world, such as Europe and Southeast Asia. We can design and research all kind of seals and sundries out of standard according to customers' requirements. Our company specializes in producing seals of double-function, drill-using, spool-using, buffer ring, dustproof, and wear-resistant ring. With a complete range of specifications, advanced equipment, perfect testing means, our company has passed the evaluation of ISO9001:2000 quality system certification. "To be credible" is our purpose and "excellent quality and fine service" is why you choose us. We sincerely hope to cooperate with you. Please contact us at your convenience.