How to replace the PTFE mechanical seal of the centrifugal pump

How to replace the PTFE mechanical seal of the centrifugal pump. Compared with the ordinary mechanical seal, the replacement of the PTFE mechanical seal is more difficult than the Grundfos mechanical seal; after a little care is taken, there will still be leakage of the cartridge mechanical seal. Phenomenon Our company provides the following operating steps and precautions for replacing the PTFE mechanical seal for your reference. 1. Assembling steps of the impeller end of the centrifugal pump PTFE mechanical seal The first step: Put the centrifugal pump PTFE mechanical seal spring on the impeller shaft with the fishing side facing up. Step 2: Put the stainless steel gasket. Step 3: Put three PTFE gaskets (the PTFE gasket needs to be immersed in the imported mechanical seal boiling water for one minute): first put the gasket with the round side up and the flat side down; then put the gasket on the other side with grooves PTFE gasket (groove face down); finally put a grooved PTFE gasket (groove face down). The fourth step: release the ring (put the grooved side down, and the groove is matched with the fishing on the spring). 2. Assembling steps of the diaphragm end of the centrifugal pump Step 1: Let the diameter ring soak in water for one minute. Step 2: Put the diameter ring on the inner hole of the partition (the black side is facing up), and press it with a stick on a soft cloth. (Note: The stick must be flat). Keywords: Grundfos mechanical seal, imported mechanical seal, cartridge mechanical seal