Although this type has many important advantages, like every other outer mechanical seal, it faces certain mounting limitations due to the challenge of heat removal from the mechanical seal faces. In this particular type of mechanical seal, this critical issue is solved by supplying coolant (water) from an independent source. The coolant circulates through the cooling chamber, removing the heat generated at the mechanical seal faces. In fact, this design where the stationary part of the mechanical seal also serves as a cooling chamber, completely separated from the working fluid provides optimal conditions for mechanical seal operation in extremely harsh industrial environments.