The special problems existing in many areas of the oil industry call for mechanical seal solutions which guarantee a very high level of operational safety and reliability. Innovations in mechanical seal technology have been driven in large measure by the extreme standards demanded by this major industry.

The Problem
In the application illustrated here, the existing shaft and sleeve structure was to be used to secure the impeller wheel and therefore could not be changed.
Another problem was the very limited space available on the outside for installing the mechanical seal gland.

The DEPAC Solution
Mechanical seal 306-S-135

To prevent uncontrollable plant stoppages it was important for the customer to be able to resort to an adjustable sealing arrangement should the mechanical seal fail. For this reason the seal was configured as a stationary cartridge, which was supplemented with a stuffing box above the mechanical seal for the installation of packings as a safety seal.