Rectorseal57500 10.1-Ounce Hi-Temp 100-Percent Rtv Silicone Sealant

High temp silicone works great on Chinese diesel heater exhaust Coupling.

I used this to seal exhaust pipes on a wood stove. So far it's working well after several days of use. I also used this to seal the doors as the fiber cloth seal was in bad shape , and it seems to be hold up good as long as it's not exposed to direct flame.(note: I used plastic wrap between the door and stove to stop the silicone from glueing the door on while it dried.)

Works as intended. Used to secure chimney cap on flue for wood burning fireplace.

This helped do what most say could not be done,i.e., patch a hole in a steam boiler. I used this in conjunction with scrap cast iron. It held up pretty well until I could replace the unit.

I ordered this caulk to seal an approximate 3/8" to 1/2" gap between my chimney concrete cap and clay flue liners. Caulk worked excellent to fill the gap. Caulk is thick. I used a putty knife to shape as needed. Happy with the result and would order again if needed. I used one tube per clay flue liner due to the large gap I needed to fill.

It does not adhere that great to silicone stove pipe boot but so far no leaks

Good for the job. Really thick I got 2 tubes just needed one. Thicker than regular silicone. Good stuff maner.

This is a really superior product for the money

I had red roof steel, and needed to seal a large area but didn't want it to show. AND I wanted it to dry quick, stay flexible, etc. It really did. Excellent in every way

I use it as gasket maker