As far as I know these are essentially the same as the Peltier coolers. With the possible exception that the materials might be engineered for a different temperature regime.
The one you linked to can only handle 150°C max - I doubt most thermoelectric coolers have a lower Tmax than that (the first one I randomly looked up listed Max Operating Temp: 180°C).
I think that most of the TEC's sold are actually designed as CPU coolers, so they should be able to handle temperatures well above the boiling point of water.
Patrik
