A relatively new fluoroplastic, perfluoralkoxy (PFA), is the insulation used for SERIES 516. PFA’s temperature rating is only slightly less than TFE. However, PFA can be applied using conventional extrusion techniques. This produces a smooth finish, as opposed to the spiral usually associated with TFE tape constructions. This is important in the foodservice industry where taped constructions present cleaning problems. The smooth surface also allows this construction to be pulled through conduits and cut-outs more easily.
Once each conductor has been coated with a color coded PFA layer, they are laid parallel and coated again with PFA.
Watlow: Your Heat Solutions Resource Brochure (EN)
Watlow: Vos Solutions de Chauffage Brochure (FR)