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Plumbing Putty Installation

  
  
  

plumbing puttyPlumbing putty is a necessity when installing drain fixtures. Plumbing putty is a clay-like compound that is sandwiched between the sink and the drain flange. It is most commonly used when installing a drain assembly in a sink or when installing a collar for a new garbage disposal.

Plumbing putty comes in a plastic container. Scoop out some with your fingers and roll it into a long pencil-like snake. It should be just larger than the diameter of a pencil. Lay the snake of plumbers putty along the underside of the lip of the drain assembly. Pay special attention to where the ends come together. It is okay if the ends overlap, but make sure you do not have any gaps. If there is a gap in the plumbers putty you will have a leak. Push it around the perimeter so that it stays and set the assembly in the sink drain hole.

As you place the drain assembly in the hole, push slightly and hold it from moving. From under the sink, you will install a friction washer, a rubber washer, and finally the nut that holds it all in place. As you tighten the nut, you should see the plumbers putty squeeze out from under the lip of the drain assembly. This is a good thing. The squeeze-out should be uniform. If you have any area under the drain assembly that doesn’t have any putty squeezing out, I would remove it and re-install the putty completely around the drain assembly as you likely have a gap which will lead to a leak.

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