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Thread: Fernco Multi-tite donut won't seat 100%

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    DIY Junior Member sfphoenix75's Avatar
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    Jan 2007
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    Norwood, MA
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    Default Fernco Multi-tite donut won't seat 100%

    Hi folks,

    After wrestling for about 4 hours with a cracked length of 4" Cast Iron vertical stack, I finally managed to get it out. Only to encounter another issue...

    The fernco multi-tite donut won't seat in the CI hub 100%. It's got 3 ribs around it and then the top flange. I've got 2 of the ribs in all the way but the top rubber flange is flush with the hub only on one side. In other words, the 3rd ribbing of the donut is exposed on the other side.

    I spent over an hour pounding that thing and it was very well lubricated. The pipe and donut are very tight and firm. It doesn't appear to be leaking...not yet anyhow.

    Should I worry about the seal because it's not seated all around? Or am I OK since it's tight as all heck.

    Any advice would be most appreciated!
    Last edited by sfphoenix75; 01-30-2011 at 06:56 PM.

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