Flx is devoting ourselves in manufacturing & supplying comprehensive range of sealing machines. Gm400b is the especial machine of the reinforcing ring of the spiral wound gasket. It is used to process the male and female form of the reinforcing rings. Adopting this machine, we also can produce the large diameter reinforcing rings to avoid to invest money on the large stand lathe to do. And it can reduce the cost of the reinforcing rings too through the new technology. We also can supply the spiral wound gasket machines, metal jacket gasket machines, gland packing machines, graphite gasket machines, water jet cutter, grinding machines for making mechanical seals, graphite yarns machines, asbestos yarns machines, and other machines in sealing fields. Flx has distinguished sealing experts & engineers to provide our customers the up-to-date sealing technologies support now, our machines have export to over 15 countries and get high praise due to the good quality & reasonable price. Look forward to receiving your reply!