Mike,
Ammonia is a definite no for acrylic lenses, so I would avoid it on the
windshield also. Ask your A&E or check with the aircraft manufacturer for
suggested sealants.
Don
"Mike Noel" wrote in message
...
I need to seal my plexiglass windshield in a few spots and happen to have
some GE Silcone II sealant on hand. It is spec'd as low odor but releases
methanol and ammonia as it cures. I have seen warnings against using
regular silicone sealant since the acetic acid it releases can corrode
aluminum, but I believe ammonia has a high pH (is basic instead of
acidic.)
Does anyone know if Silcone II is 'safe and effective' as a windshield
sealant?