How to Fix an Office Chair that Won't Stay Up

How to Fix an Office Chair that Won’t Stay Up


The first thing that came into your mind after hearing the word “office chair” is comfort. But what if your office chair keeps sinking? Well, it will not only affect your back but will also decrease your work productivity. Therefore, it’s crucial to fix an office chair that won’t stay up as soon as possible. 

To help you fix your office chair like a pro, we have some tips on how to fix an office chair that won’t stay up. However, you must know the main reasons that keep your chair sinking before diving into the main content.

Why does an office chair sink and doesn’t stay up?

So, your office chair is sinking. There can be several reasons behind it. Here are the two most common reasons

  • Pneumatic cylinder: 

The first reason can be the pneumatic cylinder of the chair which connects the base to the seat. It contains nitrogen gas which switches around the chamber to help your chair keep moving up and down.

Over time, the cylinder’s seals become damaged and don’t allow the cylinder to work properly. 

  • Adjusting valves:

The second reason for the sinking chair can be the adjusting valve. The incorrect fixation of these valves makes the air enter into the cylinder. Consequently, you’ll notice an irregular behavior of spring.¬†

Also, here you get about Sleeping in Office Chair.

How to fix an office chair that won’t stay up

If you know the main reason behind the chair sinking, it’s easy to fix it. However, Here’re some most common fixation tips to prevent your office chair from sinking. 

1. Lubricate the Components:

Lubrication works best to extend the life of your office chair. Sometimes the level that maintains the chair height is the reason for the chair sinking. It indicates that the lever needs oiling. 

Similarly, rust can also be the reason behind the sinking. So, spray any WD-40 on your chair to avoid rusting and hence sinking. 

It’s better to apply oil to the nuts, screws, and bolts surrounding the cylinder, level, or any other part. It will not only prevent your chair from sinking but also squeaky noises. 

2. Use a Hose Clamp 

 Tools required:

  • Hose clamp
  • Duct tape
  • Screwdriver
  • Degreaser


Step 1: Remove the plastic tube from the cylinder: Pneumatic cylinders mostly have a plastic tube over them. Remove this tube until you can see the metal cylinder under it. 

Step 2: Set the chair to prefer height: Now, select the appropriate height for your chair. But the question is how to choose a proper height for your chair. 

For this purpose, stand in front of your chair and make sure the chair’s seat is at your knees’ level.  

Step 3: Wrap the hose clamp: 

  • Choose a 2cm hose clamp
  • Pull the belt end of the clamp by loosening the crew on it
  • Wrap this clamp around the metal cylinder. 
  • Tight the screw of the clamp
  • Wrap the duct tape around it to tighten the clamp further.
  • Clean the cylinder if it looks greasy

Step 4: Test the chair: 

  • Lastly, sit on the chair and check if it is sinking or not. However,
  • If the chair is not at the proper height, you can move the clamp to get the desired height.
  • If the clamp loosens the position, fast a strip of duct tape over it.

3. Use a PVC Pipe

Tools required:

  • Ruler
  • PVC pipe
  • Vise
  • Saw


Step 1: Measure the cylinder:

  • Pull the plastic tube down until the metal cylinder is visible
  • Estimate cylinder’s diameter using a ruler
  • Measure the cylinder’s length at the perfect chair height

Step 2: Choose a PVC pipe:

  • Choose the PVC pipe with a length equal to the length of the cylinder. You can also choose a larger PVC pipe than the cylinder’s length. Generally, a pipe with 3.8cm fits most models.
  • Prefer to buy smaller pieces rather than one large piece. However, if you get one larger piece, you can cut it as per your requirements. 

Step 3: Insert the PVC pipe: 

  • Take a vise and secure the pipe into it
  • Cut the pipe to the desired length with your saw
  • Insert the side with a slit around the cylinder

Tips: if you’re experiencing any problem in inserting the pipe onto the cylinder, use shorter pieces of pipe and do it again. 

Step 4: Add more pipes: 

Does your chair is still at a low height? Well, you can insert another piece of the pipe into it. However, you won’t be able to lower the chair without removing the pipe.

So, make sure the chair is at the perfect height to avoid any hassle afterward.

Most importantly, the PVC pipe just acts as a stop to prevent sinking, and it doesn’t help adjust the height.  

Another drawback of using the PVC pipe is that it is prone to breakage. So, it’s not a suitable method for professional working environments.¬†Read more about How to raise an office chair without a lever.

4. Replace the Cylinder

The methods to fix the sinking office chair mentioned above are temporary. Those methods do not allow adjusting the height. You have to sit at only one height after that fixation. 

So, it’s better to replace the cylinder. This option is best, particularly when your office chairs are pretty expensive. 

No doubt, it’s not easy to replace a chair cylinder. But it gives a brand new look to your chair for another 6+ years. 

So, now the question is, which cylinder is best for your office chair? Well, most parts of the swivel chairs are built the same. So, you can choose any standard size chair cylinder. In 95% of cases, these cylinders fit into any chair. 

To sum up, if you want to give a professional look to your sinking chair, just replace its cylinder. 

5. Install a Chair Saver Kit

Replacing the gas cylinder can be an expensive option. So, what should you do if you’re tight on budget and really wants your office chair back into working condition? Well, the Chair saver kit is your money saver. 

The chair saver kit is a series of rings. You can snap these rings on the gas cylinder’s piston. You can lift the seat to a comfortable height, and then these rings will support it to stay in place. 

The remarkable feature of this saver kit is that it comes with a 5-year warranty. Moreover, you can always add a new ring to the chair when there is an issue with the previous ring. You can also add another ring if you want to adjust the chair to a better height. 

6. Use a Chair Riser

A chair riser is another budget-friendly but the worth-considering fix to a sinking chair. It’s a set of buttons. You can add these buttons to the bottom of the chair’s legs. 

While buying chair rises, make sure it’s compatible with your chair’s legs. For instance, it can be circular or any other shape. When it comes to installing the riser, you can screw them to the legs. Moreover, you can also fix the chair’s legs inside the riser’s grooves. 

Final Thoughts..!!

A sinking chair can cause pain in your back. So, you must know all the methods when it comes to how to fix an office chair that won’t stay up. Well, the use of clamp and PVC pipe is not the permanent solution to sinking. So, you can consider replacing the gas cylinder that is a long-term solution. 

However, keep in mind that the ultimate solution is to replace the office chair if you want to ease your back pain.

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