Ningbo Uninque Seals Ltd., is a professional manufacturer and exporter of mechanical seals, pumps, gaskets, o-rings and other sealing materials. The products are widely used in many fields, such as spacecraft machinery, metallurgy, printing and dyeing, foodstuff, pharmaceutical, auto industry and so on .Ningbo Unique Seals Ltd., is able to design, measure and produce all kinds of out-of-standard and special mining mechanical seals.Ningbo Unique produce design replacements for all standard,Vulcan ,AES ,Roten,Burgmann and standard John Crane unbalanced seals. Not only do they offer a number of design improvements but also substantial cost saving.