A. First, troubleshoot a bit. You can stick something down the drain (not your fingers) to try and dislodge whatever may be causing the blockage. You can also try using a shop vac to unblock the drain. If these options don’t work, cut the electricity connection to your device before you go inside to try and remove anything that’s stuck. If you still can’t find the culprit, call a professional. Your unit may be damaged.
Most modern kitchen sink drains are this dimension--both on the garbage disposal side and the "rinse" side. These are well made items that work very effectively. Unlike most kitchen sink stoppers that rest on top of the drain opening and extend upwards into the sink when you're doing dishes, these fit down into the large opening and seal the smaller opening above the garbage disposal or "rinse" sink drain strainer. In other words they seal the drain without extending upwards into the sink full of water.
Roll out a generous amount of Plumber’s putty to a uniform width making a nice snake-like gasket out of putty. Wrap the putty onto the rim of the flange. Push the flange back into position and put the bottom flange on with the clip holding it into place. Tighten the three screws evenly until all three are tight. Scrape off any extra putty from the inside of the sink. Now you are ready to lock the garbage disposer back in place, reconnect the drains and test for leaks.
When rubber gaskets age, they can develop leaks. The gasket can dry up, crack, and leak when it is repeatedly exposed to long periods of disuse where no water is present in the drain pipe. Should an older garbage disposal be removed and then placed back, it will require a new rubber gasket to again achieve a watertight seal. Moreover, if a gasket is not evenly locked on all three sides, then it will develop a leak.
Garbage disposals aren’t exactly quiet, but the device shouldn’t make a terrible screeching noise either. If your appliance is guilty of shrill sounds, there are a few potential causes. The grates could have shifted causing the device to move incorrectly, or the motor could be worn out. In either case, this usually occurs when a garbage disposal is at the end of its life, so replacement is a good option.
Cecilia Harsch has been writing professionally since 2009. She writes mainly home improvement, health and travel articles for various online publications. She has several years of experience in the home-improvement industry, focusing on gardening, and a background in group exercise instruction. Harsch received her Certified Nurses Assistant license in 2004. She attended Tarrant County College and studied English composition.