Yup, the sender I bought already had some teflon tape on it... But if yours doesn't, just leave a couple threads bare to insure a nice contact patch, it doesn't have to be too much though, very low amp draw.
'72 Mach 1 || '90 Talon TSi AWD
"Thats not a leak, my car's marking its territory!"
"If you've done it, it ain't braggin'." -Roy Rogers