4mm PTFE coupler

For those who keep getting the (hotent/heatbreak area) end of their teflon tubing to melt, causing the filament to clog, some are purchasing Capricorn PTFE filament. I'm betting that anyone who is cutting a new end to their filament are totally replacing the entire length of the tubing (from extruder to the hotend's heatbreak). What a waste.