"mike" wrote in message
...
http://img26.imageshack.us/img26/2023/dsc01398wq.jpg

I took a picture of it.

What do I need to get from home depot to re-chalk this ? the material is
hard, so i'm guessing it's not regular chalk.

picture is of the oil burner exhaust vent connecting to the chimney.

any help is much appreciated.

Chalk is hard. Caulk is not.

Furnace cement will do the job though. Available in cans ready to use.