Fanbased pointsuck system for StickPack machines

As the title says - everything worked out with our QA regarding material standards on controldevices and non interfering radiation BUT:

How to know what types of connecting devices to use - I´m thinking of the actual hardware - cables and connectors. What insulation types can be approved for cables, which plastic to use for mounting electronical components etc?

Is there anyone out there with knowledge…

/pontus