HELUFLON®-FEP-6Y fluorinated polymeric materials, single core, -100°C to +205°C HELUFLON®-FEP-6Y (copper wire, bare) fluorinated polymeric materials, single core, -100°C to +205°C HELUFLON®-FEP-6Y (copper wire, silvered) fluorinated polymeric materials, single core, -100°C to +205°C