My garbage disposal (2008 InSinkErator Evolution Compact) started leaking today because the rubber of this part that connects to the tail pipe split open. I pulled it off and noticed this on the inside of the disposal. I know nothing about disposals, but that doesn't look right to me -- so before I go through the effort of trying to fix it, is this the sign of a greater problem and should I be replacing the entire disposal?

This is the first issue I've had with the disposal in the 2+ years I've owned the house -- so will cleaning it up and replacing the part be enough? More photos of disposal here.

1 Answer 1


... should I be replacing the entire disposal?

You could try removing the disposer and cleaning up the waste elbow outlet, which looks like it may have been permanently damaged by corrosion. As a note, you can remove the disposer without disturbing the sink flange/basket assembly by tapping the large fastening ring counter-clockwise until it releases.

The waste elbow outlet requires a specific type of gasket particular to that brand of disposer, and the connection is held with a special plate and screw. Confirm that you have these, then reassemble and test to ensure it does not leak. Your only alternative is to replace the entire unit.

  • I was able to replace the gasket and plate and it isn't leaking anymore. Do you think the elbow outlet being damaged led to the premature failure of the original gasket? I guess I'm wondering if this just bought me some time, or if they're unrelated problems.
    – Matt
    May 28, 2017 at 18:02
  • 1
    It's a "chicken/egg" scenario; a failed gasket could cause a slow leak leading to corrosion. Existing corrosion could cause a slow leak at gasket, leading to... May 28, 2017 at 18:50

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