http://www.noxseal.com/ We make all kinds of mechanical seal products including cartridge seals, single spring seals,rubber bellow seals, multi-spring seals, O-ring seals, metal bellow seals and special seals based on customers’ requirements. Our seals conform to the specification of JohnCrane, Burgmann, Aesseal and Flowserve and can be interchangeable. We are also can manufacture according to customers' drawings or samples.