I have the 180 extenders and have never used any loc-tite to keep them in place. Finger tight has been sufficient for the last 3 years.
You shouldn't need any Teflon tape either, but if you do use it, be careful not to overlap the end of the valve. The sensor threads will cut the tape off and the tiny pieces can get into the sensors air opening and make it give flaky readings. I learned that the hard way when I tried using the tape on a leaky connection. Turned out that I merely needed a new red seal in the sensor, which Pressure Pro sent me for free.
2004 American Tradition; 2014 Buick LaCRosse
Homebase in the Ocala Nat'l Forest near Ocala, FL