Low Torque thread treatment?

[buck91]

Looking for the best option to use as a thread retainer on some low-torque fittings. Basically they will be about 15-20mm diamter, very fine thread, hand tight only. I need to reduce the likelihood they will loosen with use but also want to be able to remove with my hands or very light tools so finish isn't damaged. I'm looking at three Permatex products and one other right now but not sure which would be best.
1. High Performance Thread Sealant (rated 40in-lb break away on 3/8NPT, none of the others list this information)
2. Thread Sealant with PTFE
3. Low Strength Purple threadlocker
4. Vibra-tite VC-3 Threadmate

Thoughts?

 

[AutoMechanic]

I’d use the Purple Threadlocker if it was me. Or I think it’s either Permatex or Loctite that has a green version that is pretty low strength too. That is what I would use. In my opinion thread sealant is for cooling systems and stuff only at least that’s all I’ve been trained to use it on.

 

[Motu]

Of course it's good to use the right stuff, but if it's unimportant and I just want a bit of security I use some of that red non setting gasket sealant in the red syringe. You'll still be able to remove by hand, yet it won't rattle off.

 

[samven]

Use any of the low strength lockers but only put a small drop at the top of the thread near the head. If you coat a bolt that big with even the weakest locker you will need tools to get it off, maybe not a lot of torque but it will be very stiff all the way out.