I used that on a cork oil pan gasket on the first 383 I built. When I had to tear it back down later I had a heck of a time getting the remains of the gasket and cement off the block. I haven't used in the 45 years since.
If you think that cork was hard to remove, wait until you get ahold of an engine assembled with the right stuff, honda bond, or similar gasket maker. Damn near need an air chisel to the the stuff back apart.