The CS88B modified seal is a high-performance Mechanical Seal typically used in industrial pumps (such as those from Goulds, Flowserve, or Sulzer). While 'CS88B' is a specific manufacturer designation (often associated with brands like Flowserve or AESSEAL equivalents), it belongs to the category of Teflon bellow.
The Bellows Unit (Top): The white, accordion-like section is made of PTFE (Teflon). This part provides the flexibility and spring tension needed to maintain the seal while resisting chemical attack.
The Seal Face (Dark Ring): The dark grey ring integrated into the bellows is the primary sealing face, likely made of Carbon or Silicon Carbide.
The Drive Collar (Center): This stainless steel cylinder contains set screws used to lock the seal onto the pump shaft.
The Stationary Seat (Bottom): This is the metal-clad ring with a white PTFE or Ceramic insert that remains fixed in the pump's stuffing box.
The Drive Collar (Middle Component)
The stainless steel cylinder in the center is the Drive Collar.
Function: It features set screws (the small holes you see) that tighten onto the pump shaft. This is what physically 'locks' the seal to the shaft so it rotates at the correct speed.
