Sealant for furnace vent

[labman]

The AC quit on me. I haven't figured out exactly what the problem is, but the furnace blower keeps stopping. Thinking the motor was bad, I pulled it. Runs fine on the bench. I let ti go as long as a half hour, and the motor didn't get hot.

Removing the motor meant removing a section of vent. It was sealed to the heat exchanger outlet with some white junk. I had to use a torch to get it loose. So what do I reseal it with? I am not sure how hot it gets, but surely too hot for caulking compound. Gasket cement?

 

[TooManyWheels]

Lowes and HD have the appropriate sealant. It comes in a small bucket, about $8-10(?).

 

[brianl703]

It's called mastic.

 

[rjundi]

After this patch up job purchase a CO detector if you do not already own one.

 

[labman]

Originally Posted By: TooManyWheels
Lowes and HD have the appropriate sealant. It comes in a small bucket, about $8-10(?).


I am surprised they carry such a specialty item.

 

[Duke]

To solve yor first problem, change the batteries in your thermostat if yours has them. Same problem I had.

 

[TooManyWheels]

Originally Posted By: labman


I am surprised they carry such a specialty item.


Its in with the metal ducting, which, technically, is supposed to be sealed too, although it often is not.