What type of Loctite should I use in Navtec fittings?
Navtec uses Loctite RC 680 compound. It is very important that the surfaces be cleaned and free of dirt and oil before applying Loctite. While it is not necessary, we also recommend the use of Loctite Primer T to prepare the surfaces before the application of Loctite. RC 680 is a fairly high temperature high strength-retaining compound. To remove it, requires fairly high temperature. This temperature is too high for Navtec insulators so a lower temperature compound should be used on insulator fittings. Lower temperature thread locking compounds include Loctite 290 (green) and 277 (red). Both can use primer T or primer N. When using Loctite to retain rigging fittings, it is important to test the part for locking after the Loctite has set.
