I was remembering their digital cameras, not film. The 1D MkII says (from steve's review):
Its shutter is durability-tested to 200,000 exposures, the body is highly weather-resistant with more than 70 gaskets and seals, and the camera's lens mount is made of stainless steel (and is fully compatible with all Canon EF, TS-E and MP-E lenses).
My fault, but I was kinda right. Some pro cameras are that high.