NINGBO BETON MECHANICAL SEAL FACTORY founded in 1983, is a high-tech factory specializing in designing and manufacturing all kinds of mechanical seals and filters.Our main products include o-ring type, rubber bellow type,flygt pump series, grundfos type and cartridge type. The seal face material and elastomers are comprehensive choice. Meanwhile, we can also supply spare parts with material silicon carbide, Tungsten carbide, Ceramic ,carbon, stainless steel and rubber.Which can replace the similar products of John Crane, Burgmann ,AES seal, Roten,Sterling,Flowseve and Vulcan.