ORIGINAL: savagecommander
ive sealed my surefire.32 with permatex sensor safe blue rtv silicone gasket maker for over five years....
I too have used permatex, the blue and the copper. I agree her 100%. These are great RTV sealers and I have yet to have them fail on me. Granted, I do pull my engines out and disassemble them form winter cleaning and long term storage (especially now I spend almost all my RC bashing with gassers), so I have broken the RTV seals. And they have held up.
I have yet to try Racer's Edge or Threebond, and I have no doubt that would be a superior product, and if I were to go back to hardcore nitro RC running again, I would definitely give those a try, it's just that permatex has yet to fail me when I used them.