On Nov 24, 11:02*am, wrote:
Hi...just purchased a fairly old cast iron wood stove. *Some of the
"cement" in the corners is worn away or cracked, therefore breaking
the air tight seal. *What type of cement or caulking is used for these
types of repairs? *Is there a special high-heat cement?

Thanks!

Yes. You can get it at any decent hardware store. Just tell them
what you need and they'll show you what they got.