{HEAD ~ High quality coaxial electrical cables} employing {TAIL ~ insulation} of fluorocarbon elastomers, tetrafluorethylene propylene polymers and silicon are all suitable, with tetrafluorethylene propylene polymers being slightly preferred 
employing
{ HEAD ~ High quality coaxial electrical cables } employing { TAIL ~ insulation } of fluorocarbon elastomers , tetrafluorethylene propylene polymers and silicon are all suitable , with tetrafluorethylene propylene polymers being slightly preferred
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH