Waste Maid Minor Sink Flange Seal Leak Under Static Pressure

Water slowly seeps from around the sink flange into the cabinet only when the sink is full

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Insufficient plumber's putty under flange, Warped sink surface, Loose mounting ring screws, Dried-out sealant on older Waste Maid installation

How to Fix / Troubleshooting

Safety First: Do not leave the cabinet wet; prolonged moisture can cause mold and damage.

  • Confirm leak: Plug the sink, fill with water, and add a few drops of food coloring. Check under the sink for colored drips around the flange area.
  • Try tightening first: Slightly tighten the mounting ring screws evenly to compress the putty. Do not overtighten and deform the sink.
  • Reseal if needed: If tightening does not stop the leak, remove the disposal and sink flange, clean off old putty, and apply fresh plumber's putty before reinstalling.
  • Test again: Refill the sink and check for leaks. Re-adjust as needed.
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Repair Difficulty

Medium 3/5

Required Part

Sink Flange
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