PE insulated coaxial cable are cable using PE (polyethylene) as dielectric.PE with its stable performance and economical costs,is used in coaxial cable as dielectric popularly.
Check the data sheet of some typical PE coaxial cable as below please:
RG58, RG59, RG59 CCA, RG174, RG213, RG214, RG217, RG8, RG223.