The Problem: You fill your sink up with water and it slowly drains away. There is nothing leaking underneath the sink and, therefore, you think the seal on the back of the plug is not working. You may have even spoken to the plumber or fitter – they have advised you it has been fitted correctly and you need to get some new plugs.
The Answer: You firstly need to complete the following test to see if the problem actually lies with a faulty plug seal. We can confidently say that, 99% of the time, the problem is NOT the plug or its seal.

Here we explain the basics of what we are dealing with. The plug (also known as the basket strainer waste) is sat into a metal flange. When you push the plug downwards, the seal on the underside of the plug comes into contact with the flange and creates a seal.
Kitchen Sink Strainer/stopper
Push the sink plug down as you would normally to seal and then fill to just over the top of the plug with water. Be careful NOT to put too much water in. You do not want water to go over the top of the metal outer flange and into the sink.
If the rubber seal on the plug is faulty, the water will now drain away and you will need to order a new plug . If the seal is not faulty the water will remain and, therefore, prove that there is nothing wrong with the plug.
We will now explain exactly what the problem is. Basically, if water is draining away, but not through the plug seal, the sink has not been fitted correctly. The water is actually leaking underneath the metal flange due to a missing waterproof seal. In many cases, the installer has either dry fitted the metal flange providing no watertight seal between the metal flange and the ceramic sink. Or it is possible that the installer has used a fabric or rubber seal that is not adequate.
Pk Plastic Sink Strainer
Start by removing the basket strainer waste plug and put to one side. Unscrew the centre bolt and place to one side. You should now be able to pull off/lift up the metal flange. On inspection, you will either see no silicone sealant on the underneath, a broken ring of sealant or nothing at all. All you now need to do is ensure everything is dry and clean. Apply a small bead of silicone sealant to the underside of the metal flange. Carefully place the metal flange back in place and refix the centre bolt back into place.
Leave the sealant to completely dry (please refer to the manufacturer’s recommendations). Once dry you can put the plug back into position. Fill the sink up with water and you should find it no longer drains away.THE MATERIAL CONTAINED IN THIS ARTICLE IS PROVIDED FOR GENERAL INFORMATION PURPOSES ONLY AND DOES NOT CONSTITUTE PROFESSIONAL ADVICE.LANDMARK HOME WARRANTY DOES NOT PURPORT TO BE A SUBJECT MATTER EXPERT WITH REGARD TO THIS MATERIAL, AND YOU SHOULD CONDUCT YOUR OWN RESEARCH AND/OR SEEK THE ADVICE OF APPROPRIATELY QUALIFIED PROFESSIONALS WITH REGARD TO YOUR SPECIFIC CIRCUMSTANCES BEFORE YOU TAKE ACTION. LANDMARK HOME WARRANTY ASSUMES NO RESPONSIBILITY, AND SPECIFICALLY DISCLAIMS ALL LIABILITY, FOR YOUR USE OF ANY AND ALL INFORMATION CONTAINED HEREIN.
Have you noticed that your sink isn't draining as well lately? You wash your hands, and you come back a half hour later and the soapy water is sitting in the basin. Or maybe you have the opposite problem – you’re trying to fill the basin of your sink with water, and the water refuses to stay in the sink, and when you pull up on that rod on the back of your faucet, the basin won’t plug. In both situations, there's one main problem: your sink drain pop-up mechanism!
Pcs Stainless Steel Sink Strainer Plug Water Basin Sink Drain Filter Basket Draine Home Floor Drain Mesh Sink Kitchen Accessori
Not sure what that means? That's OK. Many people aren't familiar with the words pop-up assembly. Here at Landmark Home Warranty, we know a lot about pop-up assemblies since we provide coverage on different parts of your sink, so we are going to explain what a sink pop up mechanism is, and how it works.

The rod on the back of your faucet that you were pulling earlier to plug the sink is a part of the pop-up assembly.
It’s actually a fairly simple design. When the lift rod is pulled upwards, it pulls the pivot rod up as well. This pivot rod is attached to the stopper, which is pulled down, effectively sealing the sink.
X Kitchen Waste Stainless Steel Sink Strainer Plug Drain Filter Bask– Salelink.co.nz
In this graphic, you can see that the pivot rod is connected to the stopper by going through a small circle on the bottom of the stopper. This allows the pivot rod to pull the stopper down. The pivot rod is connected to the lift rod by the clevis screw and clevis strap. It is also held together by the spring clip, which the pivot rod goes through. The sides of the spring clip go on either side of the clevis strap. When the lift rod is pulled up, the clevis strap is pulled up as well, which pulls the pivot rod as well. This pulls the small circle on the stopper down, as well as the stopper itself. The seal that you can see in the graphic makes it so the water running down the pipe does not leak out into your bathroom. As you can see, the way the pop-up mechanism is designed can trap a lot of gunk, which results in a slow draining sink. Sometimes the pivot rod can get rusted and slip out of the stopper, which obviously makes the whole pop-up mechanism not work. If the pivot rod is not connected to the stopper, then the basin will not be plugged, and water will keep draining out of the sink.
If your sink isn’t draining properly, cleaning your pop-up mechanism is the first step. If your sink won’t plug with the pop-up mechanism, you will have to replace it with a new one. Luckily both of these problems can be fixed simply and with the same steps!You can go to our next article and learn how to replace or maintaing your sink pop up mechanism on your sink.

If you have a Landmark Home Warranty, you might have noticed that pop-up mechanisms aren’t covered with your home warranty. That's because a pop-up assembly costs less for parts and labor than your service call fee would be. A pop-up mechanism can be purchased for anything between $4 - $11 at most stores. Not only that, it is a cinch to replace – it takes less than 10 minutes. Landmark Home Warranty isn’t going to make you spend a service call fee between $60-$100 on something that doesn’t cost anything near that amount.
Sink & Drain Plumbing
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How Do I Know If The Strainer Can Fit My Drain?
We get a lot of customers with this familiar problem. You will the sink up with water, ready to do your washing up, you walk away to grab the remaining washing up from around the house, come back and half your water is gone.
If this is you, and your sink is slowly draining of water once it has been filled, but there are no visible leaks underneath the sink – an immediate thought is that there is a fault with the basket strainer waste/plug or seal. A plumber may have already advised that you need a new basket strainer or plug!
In 99% of cases a faulty basket strainer seal or plug is not actually what causes the water to drain. Follow our easy steps to discover if the issue does lie with a faulty rubber seal and what to do if not.
I Closed My Sink Drain Stopper And Now It Won't Open Again. Is There Any Way That I Can Repair This Without Hiring A Plumber?
The basket strainer waste, more commonly referred to as the plug sits in a metal flange. When the basket strainer/plug is pushed down the black rubber seal on the underside of the basket strainer/plug makes contact with the flange forming a seal.

Push your basket strainer waste down as normal to form the seal. Fill your sink carefully with a little water so that it covers just the top of the basket strainer/plug. You DO NOT want the level of water to go over on to the top of the metal sink flange which sits within the bottom of the sink.
Water will now either drain away or remain where it is. If you discover that the water is draining away then your basket
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