The JFC-F terminals are used on all of the JFC series connectors. They are supplied with the correct wire seals. The correct wire seal is oblong like the hole, not round. These seals are very specific to JFC connectors, and it is not advised to use generic seals.
All JFC series terminals and connectors ship with brown wire seals by default. These wire seals are for wires with an OD of 2.1-2.5mm, and are good for 16-20 AWG GXL. If you need the other seals, please specify it when ordering, and we can swap them out as needed.
JFC Seal Color Wire Diameters (mm)
Brown 2.1 - 2.5
Blue 1.6 - 2.0
Red 1.1 - 1.5
Note that the connectors already come with the necessary terminals and seals.