Back-up ring, backup ring, PU seal manufacturer, supplier, factory, exporter--China Zhejiang XIPULI seal technology Co. Ltd. specialized in seal technology exploitation, making and PU products producing. Besides we can design all kinds of seals and PU products, back-up ring, backup ring, PU seal, back-up rings, backup rings, PU seals according to customers request to satisfy the demand of customers. We have studied this field for a very long time, and gained a lot of experiences. We are perfecting products quality for we have more than 100 kinds of elastomers directions of producing of materials which can meet all kinds of customers' requirements, and possess complete internationally advanced physicochemical testing equipment and production capacity of the scale.We have passed ISO9001 standard management system at the end of 2000. The quality of our products, back-up ring, backup ring, PU seal, back-up rings, backup rings, PU seals is trustworthy.