Yes. Silicone will damage O2 sensors.
Construction adhesive - not sure. Safest bet would be epoxy or something from the parts store labeled "o2 sensor safe". High temp hot melt glue would work too. I guess it all depends on what you're doing.
Construction adhesive - not sure. Safest bet would be epoxy or something from the parts store labeled "o2 sensor safe". High temp hot melt glue would work too. I guess it all depends on what you're doing.