Asked in
Heating Ventilating and Air Conditioning
Manufacturing
Elements and Compounds
Metal and Alloys

What causes rust stains on the outside of an oil heat chimney that already has an independtly confirmed stainless steel sleeve and cap?

Answer

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Wiki User
February 27, 2009 12:23AM

The old sleeve and cap were not stainless steel or perhaps the hardware used to affix the cap is not stainless steel.