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Posted by on December 27, 2007, 6:52 pm
I have an oil-fired boiler for heating my home. This one is welded
steel. There is a large flange (about 9" in diameter & secured by 6
bolts) where the controls & immersion coil go into the water jacket.
It is currently sealed by the original gasket which is now leaking a
bit. I bought the standard red 1/4" thick gasket matetial with plans
to cut out a new one & replace it, but I have to wonder if there isn't
a better, cheaper way.
Can I simply seal this flange with high-temperature RTV (also known as
Silicone Rubber). The Black stuff is rated for about 600 degrees.
Any thoughts?
Mike N.
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