What action should you take if you notice a slight leak on a mechanical seal you have just installed?

Allowing a reasonable time for seals to adjust is the appropriate action to take if you notice a slight leak on a mechanical seal that has just been installed. Newly installed seals can often require a break-in period, during which minor adjustments occur as the seal conforms to the mating surfaces and settles into its operational position. This adjustment can help eliminate initial leaks that might not be indicative of a failure, but rather a phase that the installation is going through.

If a leak is present shortly after installation, it does not necessarily signal an immediate problem. It's important to monitor the situation for a short period to determine if the leak resolves itself as the mechanical seal properly beds in. Rushing into more drastic actions such as replacing components or shutting down equipment can be unnecessary unless the leak persists or worsens beyond a minor level.

The other options imply immediate intervention, which may not be required at this stage. It's critical to give the seal a chance to adjust before taking further action.