Andair Fuel Valve and Loctite 648. Why?
I've got the standard Andair FS20x2 fuel selector valve on my RV-14. Andair is very specific that the #4 screws used on the fittings are to be secured with Loctite 648. I was unfamiliar with this particular Loctite product and looked it up. Unlike the traditional blue and red Loctite threadlockers, Loctite 648 is a retaining compound for close tolerance cylindrical parts. It doesn't seem appropriate for use a threadlocker.
Does anyone know why this product is recommended for the fuel fitting machine screws vs traditional threadlockers? I've got an email into Andair as well.
Thanks for your time.
QB RV-14 #140702
Empennage kit finished
Working on fuselage