AmazonCommercial Loose or Misaligned Slip-Joint Washers

Disposal runs but water slowly seeps from slip-joint connections on the drain piping below the unit.

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Possible Causes

Loose slip nuts on tailpiece or trap, Misaligned plastic washers, Cracked PVC fittings, Over-tightened nuts deforming washers

How to Fix / Troubleshooting

Safety First: Turn OFF power to the disposal. Place a bucket under the drain piping.

  • Step 1 – Identify leak point: Run water and watch each slip-joint connection for drips.
  • Step 2 – Reseat washers: Loosen the leaking nut, remove and inspect the washer. Reinstall with the tapered side facing the correct direction (toward the joint).
  • Step 3 – Tighten by hand: Hand-tighten the nut, then add a small additional turn with pliers. Do not overtighten.
  • Step 4 – Replace cracked parts: If any PVC or metal fitting is cracked, replace that section.
  • Step 5 – Test again: Run water for several minutes and check for leaks.
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Repair Difficulty

Easy 2/5

Required Part

Sink Drain Trap Kit
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