Do Dual Drain Openings in Toilets Require Sealing One?

As we all know, toilets are essential sanitary ware in every household. So, do the two drainage holes in the toilet need to be sealed off? Let’s take a look together with the editor.

Do the two drainage holes in the toilet need to be sealed off

Yes, newly purchased toilets typically have two holes at the bottom, spaced either 300mm or 400mm apart. This design allows users to choose between using the 300mm drainage hole or the 400mm drainage hole based on actual needs. After selecting the correct drainage hole, the other hole must be sealed with silicone sealant; otherwise, wastewater may overflow.

How to purchase a quality toilet

1、When buying a toilet, it's crucial to carefully inspect the surface of the toilet to see if it is smooth and free of bumps or inconsistencies. Generally, high-end toilets are fully ceramic and have a certain weight, although they may be more expensive. For typical households, it's sufficient to ensure that the surface of the toilet is smooth and durable.

2、After selecting the toilet, you should conduct a flushing test to determine if it operates correctly. Prepare a few ping-pong balls and place them inside the toilet. Then, pour a basin of clean water into the toilet and observe whether the ping-pong balls are flushed away. Additionally, pay attention to whether any water splashes out during the flushing process, ensuring that the water seal height of the toilet is between 55mm and 60mm.

3、When choosing a toilet, you should also carefully measure the distance for the reserved toilet drain (the "坑距") and check your home's drainage method. Typically, the measurement error for the toilet drain should be within 1 centimeter; otherwise, it will be challenging to install the toilet properly and more complicated to replace later.

In summary：the above information discusses whether the two drainage holes in the toilet need to be sealed and how to purchase a quality toilet. For those seeking to learn more, please continue to follow our website for more exciting content coming your way.