Which component is NOT typically evaluated when selecting packing materials?

When selecting packing materials, the focus is primarily on the specific attributes and conditions relevant to the packing itself. This includes understanding the function the packing material needs to serve, ensuring that it can withstand the necessary temperature ratings for the application, and confirming compatibility with any fluids it will encounter in service.

Evaluating the "function of the packing material" ensures that it is suitable for the application, addressing factors like sealing capability or pressure resistance. The "temperature rating of the service" is critical to ensure that the material can perform effectively under the expected temperature conditions without degrading. Furthermore, assessing "material compatibility with fluids" is essential to prevent chemical reactions that could compromise the integrity of the packing or the fluids it comes into contact with.

In contrast, while the "location of equipment installation" is an important consideration for the overall installation and maintenance planning, it does not directly influence the characteristics of the packing material itself. Therefore, it is not typically evaluated in the same way as the other critical factors when selecting packing materials.