I'm trying to patch a small hole in the heat exchanger on my oil
furnance.. I am unable to find any RTV High Temp cauking at any place
like Lowes... so I went to advanced auto parts and they have RTV gasket
sealant which I was told could also work... is this true? or not?
I don't think you will find any RTV Silicone that will hold up under those
conditions, but a muffler patching compound might. They sell auto muffler
"bandages" that use glass cloth and a sodium silicate adhesive that I've
used to patch a hole in kiln. A couple of layers might last for a while if
the hole is not too large; it doesn't have a lot of strength.
What's interesting is that everyone here has said "you will die". I
understand the concern. However without being patched the system is not
giving off any CO through the ducts. This was measured by a HVAC
individual. Additionally, Even if you put the probe right over the hole
it registers pretty much nothing. I was told that for the time being I
can use RTV heat resistant cauking (red) to patch the rusted area.
Obviously I have CO detectors in my house, and do plan on replacing the
Several people died a few years ago in NC because of a leak in a heat
exchanger. The people had complained several times to the public housing
commission because of smells but nothing was done. After the deaths they
found several others leaking in the same complex. CO will only form if the
furnace is not burning with enuf oxygen so it should not really happen
unless there is a malfunction. But I would rather gamble in las Vegas.
This is Turtle.
OK it's your life and family at stake here SOO.
Go down to auto parts house and get you some Liquid steel / Steel Putty / Steel
Max or what every they call it and mold a plug of it over the hole and wait
about 6 hours. then fire it back up. Try to get it molded over both sides if you
can. Do change it out as soon as you can for CO reasons if the furnace burning
ratio become messed up.
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