Submersible pump leaks mostly due to sealing device aging, wear and tear, in addition to replace the new seal, but also can take the following simple method to exclude. First, the submersible pump seal due to long-term use of the loss of elasticity, then remove the seal, then find a 0.3-3.5 mm thick paper or cloth trimmed into a groove slightly larger than the original gasket into the groove Finally, install the original seal. Second, nylon seal seat within the rubber seal wear, the seal can be removed, and then exchange the location of installation, such as the sealing ring on the fastening spring loses its elasticity or fracture, you can remove the spring, with a suitable diameter wire or wire tight. Third, the first ring serious wear and tear can be removed nylon ring, and then coated with asbestos butter, wrapped in stainless steel wrap to slightly higher than the original nylon seat, and then fill the butter, and then nylon seat with a bolt Compaction. Fourth, the seal box and cast iron seal between the loss of elasticity, the seal can be taken out of the cast iron tank, find a piece of cardboard thickness of six to one millimeter cut into the same size, pad in the tank, and then seal Circle into. Fifth, oil hole rubber ring damage, can find a piece of tape, cut into holes slightly larger than the bolt, together with the flat pad above, together set in the bolt into the hole.