Skip to main content

Inspect and Replace Gaskets — Replace Gaskets or Seals

Beginner3 hours

Part of project

Garbage Disposal Repair · Step 7 of 8

Helpful?

In this video

If a leak originates from between two parts of the head assembly, disassemble those parts and carefully inspect the gasket in the female connection. The gasket is essential for completing the seal in hose-threaded connections. Check if the gasket is missing, damaged, or misaligned. If it's misaligned, simply reposition it correctly at the bottom of the female connection and retest the assembly. If the gasket is missing or damaged, it must be replaced. Replacements are inexpensive and widely available.

8.7K views83

FAQs

What tools are essential for a basic garbage disposal repair, and why?

An Allen wrench (typically 1/4 inch or 5/16 inch, often provided with the disposal) is crucial for clearing jams by manually rotating the impellers. A flashlight helps you see inside the drain. Pliers and an adjustable wrench are needed for tightening plumbing connections to stop leaks.

How long does a typical garbage disposal repair take, and is it a difficult DIY project?

Most common garbage disposal repairs, such as clearing a jam or resetting the motor, can take as little as 15-30 minutes. Fixing a leak by tightening connections or replacing a gasket might take 1-2 hours. Overall, it's considered a beginner-friendly project, but electrical and plumbing work always requires careful attention.

My disposal hums but doesn't spin. What's the first thing I should check?

A humming disposal usually indicates a jam. First, ensure the power is off. Then, look into the drain opening with a flashlight for any obstructions and try to remove them. If that doesn't work, use the hex key (Allen wrench) in the center hole at the bottom of the disposal to manually rotate the impellers until they move freely.

What should I do if my garbage disposal is leaking?

Identify the source of the leak first. Common leak points include the sink flange, dishwasher connection, or discharge pipe connections. Tighten any loose nuts or bolts with an adjustable wrench. If tightening doesn't work, you may need to replace worn gaskets or the rubber seal under the sink flange.