Office Chair Cylinder Replacement with Removal Tool (As Seen On PBS) - Heavy Duty Pneumatic Gas Lift Piston for Desk Chairs and Gaming Chairs - Universal Fit
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Style: Cylinder Replacement Kit
Features
- EASY REMOVAL & INSTALLATION We invented the first cylinder replacement kit with a purpose-built removal tool in 2016. No more struggling for hours with tools you dont have. Since then, our kits have helped fix 120,000+ office chairs, backed by the original American family business that guides you through every step.
- SAVE MONEY. REVIVE YOUR CHAIR - Fix your sinking office chair by replacing the cylinder instead of spending money on a brand new computer chair. We'll send you the highest quality cylinder on the market, our exclusive cylinder removal tool, detailed step-by-step installation instructions, gloves, and our money-back guarantee. You have nothing to lose!
- INDUSTRY STANDARD SIZE - This pneumatic piston cylinder will fit almost every office chair on the market including herman miller aeron. The cylinder has a 1-1/8" (28mm) diameter piston shaft and a 2" (50mm) diameter column. If it doesn't fit your specific chair, no problem, we'll take care of you.
- EXTRA HEAVY DUTY - Our desk chair cylinders are all Class 4, which are known as the most durable, longest lasting, & highest quality hydraulic gas lift cylinders. Cheaper options can start sinking within the first few months of use. Our's don't. They can even support up to 1000 lbs without fail.
- LIFETIME WARRANTY - Our goal is to provide you with the highest quality office chair parts so you can extend the life of your chair. So if for some reason our cylinder fails, leaks, or starts sinking - email us, and we'll send you a brand new one. Our warranty has no expiration date.
Description
Glide Smoother and Work Happier — Upgrade Your Chair In Seconds. "We want you to be absolutely thrilled with your purchase. So if you ever need anything, just let us know!" -Meredith & Kevin Visit the Store Co-Founders Meredith and Kevin share their story on the PBS show Start Up Our Story - We're a small family owned business that started with one simple idea. Rollerblade wheels on office chairs so people everywhere could protect their hardwood floors. Our Mission - To make workdays smoother. One chair at a time. Our Promise - We'll do everything possible to make sure you are absolutely thrilled with your purchase. No matter what, we are here for you. Fix Your Sinking Office Chair We're a small business from Columbus Ohio, and the original designer of the chair cylinder replacement kit with removal tool. This replacement kit comes with everything you need to fix your sinking office chair. This replacement chair cylinder will fit almost every office chair on the market including the popular aeron chair. If it doesn't fit your specific chair, no problem, we'll take care of you. Piston Diameter: 1-1/8" (28mm) Column Diameter: 2" (50mm) Fix Your Sinking Chair in Minutes We made the cylinder replacement process easier than ever. Just a few easy steps and you'll have your favorite chair feeling brand new. Office Chair Cylinder Rollerblade Chair Wheels Black Chair Wheels Purple Chair Wheels Blue Chair Wheels Small Business Shares Their Story The co-founders of The Office Oasis, Meredith and Kevin, were featured on the PBS show Start Up. They shared their story on how they started a growing e-commerce business with just one simple idea.
Brand: The Office Oasis
Color: Black
Material: Alloy Steel
Auto Part Position: Bottom
Extended Length: 4.75 inches
Brand Name: The Office Oasis
Model: OAS-2010
Unit Count: 1 Count
Warranty Description: Lifetime Warranty
UPC: 760842156357
Manufacturer: The Office Oasis
Included Components: Chair Cylinder, Cylinder Removal Tool, Gloves, Installation Instructions
Item Weight: 2.5 pounds
Part Number: OAS-2010
Color: Black
Material Type: Alloy Steel
Auto Part Position: Bottom
Extended Length: 4.75 inches
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
within 30 days
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
My chair has been sinking so I finally decided to do something. I didn't want to buy a new one as nothing else is wrong with it. After some research online, I found out one way is to replace the gas cylinder. I viewed several Youtube videos showing people taking it apart with ease: knocking it from the bottom and then twisting it from the top. Little did I know that my chair would require a *LOT* more effort than that. I decided on The Office Oasis' Replacement Gas Cylinder because it also included tools and instructions to help remove the old cylinder that I didn't see in other products. I know I could have saved some money and just buy the replacement gas cylinder only. However I have never done this before so I decided to go with The Office Oasis. I also thought if a company has created a complete solution I would give my business to them. After I made my purchase but before receiving the product, I received an email from the company by the name of Meredith, who I later found out is the owner, with instructions in PDF to get started. I was surprised by her email but was still thankful for receiving the instructions ahead of time. I thanked her and noted that this lets me know that her company is very efficient and dedicated to product quality. After removing my chair's old gas cylinder, which I like to describe later, the new cylinder was installed very easily. I just slide it into the bottom of the seat and also into the wheel base. After so much effort in removing the old cylinder, I forgot to adjust my chair's cylinder adjustment screw and sat on the chair immediately after installing the new cylinder. My chair started sinking again. I realized what I forgot to do. So far the new cylinder works great. I also bought The Office Oasis' clear caster wheels to go with my chair and both the cylinder and the wheels have given my chair new life. Thanks The Office Oasis and Meredith for selling these products. Your company is fantastic. Now I like to describe my journey removing the old cylinder which was spread out over several weeks. I'm not disappointed by it or anything. I didn't mind how long it took as I was determined to see this to the end. My chair is very old such that the cylinder is so deep into the wheel base that it almost touches the floor. Every time I see it I wonder if it was ever like that to begin with. My first problem was removing the bottom cylinder from the wheel base. No matter how hard I hammered away from the bottom, the cylinder just wouldn't budge. I sprayed WD40 at the bottom of the wheel base and waited more than the recommended time before hammering and still couldn't hammer it out. I eventually solved this by first separating the cylinder by removing the metal tab, which I ended up destroying because I didn't know how they work, located at the bottom of the cylinder and then spraying lots of WD40 at the top of the wheel base and letting it sit overnight for a few nights. Then I started hammering from the bottom with a piece of wood between. I wasn't successful on the first try but I reasoned the more I hammer it even if spread out over multiple days it should eventually come out. Also in between my unsuccessful attempts I would apply more WD40 and let sit overnight again. The last knock to get the cylinder out was very satisfying. I noticed the area where the cylinder sat inside the wheel base was full of WD40! Before I did this, I thought I ask my local mechanic for help, even offering to pay for the service, as I don't have a sledge hammer but unfortunately he couldn't help me. He tried to knock it from the other direction but luckily I stopped him and said to hammer from the bottom of the wheel base. He looked at it again and came to the conclusion that something is stuck and didn't want to do it without risking breaking either my wheel base or the cylinder. I tried to explain how those two parts are put together but he had already made up his mind so I figure it was my problem to solve. My second problem was removing the top cylinder from the seat. Actually the provided shaft collars were meant for this but my chair's cylinder simply didn't have room for the collars. Technically my chair's cylinder does have a thin enough shaft cylinder for the collars to hold on to. The problem was there was an external shaft cylinder with a larger diameter that went almost all the way up to the bottom of the seat. It covered a lot of the thin internal shaft cylinder. I tried pulling it down but it was uneventful. I researched online and one good result I found was a Youtube video by Ed Ng that highly recommended taking apart the seat and knocking it out from the top. I wanted to try this but I didn't have the tools to take the seat apart. I decided to contact Meredith for any advice on fitting the shaft collars as I wasn't very knowledgeable in how gas cylinders work and I was surprised to get not only an immediate response but also the responses carried over into the weekend. I'm sorry I didn't get to mention this but I apologize to take up your weekend time. I think Meredith and The Office Oasis are professionals and a quality company! Meredith suggested I use a pipe wrench to hopefully pull the external shaft collar down and if that didn't work to try knocking it out from the top. She also offered to refund me if I'm still having difficulty. I was just amazed at her professionalism. I thanked her for the advice and proceeded to try pulling the shaft with a pipe wrench. I did get a better hold than with gloved hands but it was still uneventful. I finally got the tools to take apart my seat and once I saw the top of the cylinder I proceeded to hammer it down with a long socket in between. Nothing happened as the cylinder was still very stuck. I actually solved this problem first. So to help me hammer it down, I doubled or maybe more than quadrupled down on the instructions' advice of using WD40 to help loosen the friction hold. I poured down a cup of used WD40 into the top of the cylinder. The used WD40 was from spraying the bottom of the wheel base which most of it collected in the crevices. Again I solved this problem first and after waiting a few days, I proceeded to hammer away and the last one was like sweet chin music when HBK knocks down his opponent. So when I knocked out the cylinder from the wheel base, it was HBK all over again! Although I didn't get a chance to use the shaft collars, I like it and am saving it for whatever future use that comes to mind. Thank you Meredith and The Office Oasis for creating complete and quality products and backing it up with professional service. I wish your company continued success.
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Reviewed in the United States on March 23, 2017 by a-user-321
My 2002 Aeron cylinder blew (not bad since I sit in it every day and weigh 220, working from home for the past 2 years) so I was looking for a good replacement that didn't require ordering one through the local HM dealer. After evaluating many options I selected the Oasis kit - I looked at some two stage cylinders closer to the OEM but due to either shipment times or functional need (I don't need to go lower) this seemed like a good and affordable option. And the removal kit bits seemed like a good option after watching the numerous videos and reading plenty of forum posts about the difficulty removing old cylinders. Mine has been installed for 20 years, the past two with relatively hard use so I anticipated a challenge and it did not disappoint in terms of difficulty. I'll comment on the cylinder itself, and removal of the old cylinder as separate (but related) issues. The cylinder itself has worked great - as others have noted it does not sit in the base of the Aeron as deeply as the OEM cylinder, thus it does raise the maximum chair height by an inch or two. If this matters depends on the user - for me I wished for maybe another inch with the OEM fully extended - worked fine but the perfect height for my "desk" (a repurposed drop leaf table) would have been a bit higher. So this replacement works well - I have it lowered just a hair as the highest setting is a bit high for my situation but the flexibility is nice. Do note the instructions online for adjusting the lever screw that presses against the cylinder button - I did have to tweak mine a bit as the prior setting for the OEM cylinder was too long and resulted in the replacement not holding the height when seated but it's a quick and easy adjustment - works perfectly now. The button on the OEM part is shorter than the replacement so this was expected - but for anyone wondering the taller button on the Oasis does work with the Aeron! Removal of the old cylinder... I don't have a 12 or 14" pipe wrench and while I have a good assortment of tools wasn't that driven to get one for this project alone (since I've never needed one otherwise in 20 years of home maintenance). Prior to receiving this new cylinder I'd given removal of the old one a go using 10" slip joint pliers, vise grips, with no success. Soaked the joint with liquid wrench penetrating oil and was getting no result whatsoever. Not a budge. Again my old cylinder was well and truly lodged. So I was anxious to try the removal tool included with this kit and using it I was able to dislodge the seat from the post! So it does work - here are some tips for use: first my cylinder had spewed grease/oil when it blew so I found that just wiping the post with a dry paper towel/cloth did not get the post clean enough for the removal tool part that you clamp down to gain a solid grip. I used some simple green degreaser, then a run of rubbing alcohol to insure the post was really clean. Once I did that I was able to clamp down the collar (and do clamp it down tight!) and it held. At that point it was just a matter of slowly turning the "pressure" screws through the collar - 1/4 to 1/2 turn on one, then the other. I did find steady pressure on both sides worked well. If you go in smaller turns alternating each side you'll not need to apply a ton of torque to the allen wrench to achieve a result. I heard a fairly distinct pop when it first started to loosen and then it went pretty quickly - a few more turns and the seat detached from the post. So the removal tool does work with some patience and materials preparation. I've saved it for future use if needed. I do think it was easier than trying to torque it off with a wrench unless you already own a pretty long and heavy duty pipe wrench. Even then the screw pressure requires less oomph overall than even a pipe wrench I would think. Note that the removal tool gets the seat off but does not remove the old cylinder from the wheel base. Given the ability to use a mallet or dead weight hammer on the base (unlike the seat) it probably isn't needed but do expect to spend some effort getting the base removed as well. I used penetrating oil and a rubber mallet with little success. Here are my tips on that part of the job if yours is stuck. First expect to take some whacks at it - like maybe not 2 or 3 ;) I used the edge of my lower deck (around 2 feet off the ground) with some padding to make sure when it released it hit the ground and didn't take off a toe. You'll need a stable surface for sure. I decided to leave mine outside for an hour or two in 40s temps to shrink the metal and that seemed to help. I also alternated hitting the bottom of the cylinder with sitting the cylinder bottom on the deck and alternating hitting the base with a rubber mallet on opposing legs (which gets the benefit of the longer leg leverage, as well as some offset pressure to eventually break the seating). It did eventually release but it does take some time. Have patience! New cylinder install is super easy - I did put some "no seize" lubricant on each end of the cylinder to give some minor aid if I ever need to replace this again - whether it will help I don't know but can't hurt anything.
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Reviewed in the United States on January 13, 2022 by Amazon Customer
This is a great product! I sat on my chair for the last year while I would sink in sudden 1 inch increments until my knees were in my chest. I finally gave up and looked for cylinder replacements. This is highly rated for a reason. Not only does it firmly support my weight (225), but I can sit about 4-6 inches higher if I want to! There are no negatives in this product. It's durable, and works better than I expected! They are also very honest in their installation instructions. I recommend you take their advice in all aspects of the installation. They say the removal of the old cylinder is the hardest part. It's true. Take my advice, do it in the garage or outside. It's greasy and messy and when you finally get the old cylinder out little oily pieces fly everywhere like a grenade went off. Anyone you live with will appreciate that you were thoughtful enough to do it outside the house, or that you cleaned up all the stupid little grease spatters before you stepped in them and tracked then through the house. Installation of the new cylinder is as easy as they say. Stick it in the hole, put the seat on it, and sit down. Done. Thanks Office Oasis! Well done.
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Reviewed in the United States on July 5, 2026 by Dan
I purchased this office chair cylinder replacement kit 8 years ago, and the cylinder finally failed. I contacted the company, and they honored their lifetime guarantee immediately by shipping a brand-new replacement cylinder with the removal kit. Following their instructions made the installation incredibly smooth. However, I initially ran into an issue where the chair wouldn’t hold its height. It turns out that older Herman Miller chairs have a set screw for the height lever under the seat, under the plastic cover, and right on top of where the cylinder connects to the seat. In my case, it just needed a quick adjustment with an Allen wrench after the new cylinder was installed. Once I adjusted that screw, the chair works perfectly! I am extremely happy with their quick response and top-tier customer service. They truly stand behind their product. Highly recommended!
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Reviewed in the United States on July 21, 2026 by Steve T
This replacement cylinder is well-made and sturdy. The kit comes with everything you need to install, with the exception of a hammer. You will need that to remove the old cylinder from the base of your chair. Once installed, it functioned as expected. I strongly recommend this product.
Reviewed in the United States on May 5, 2026 by Tadashi Davis
I'm incredibly lazy about writing reviews. It's a testament to how much I enjoyed this product that I am writing this review within 24 hours of the item being delivered and installed! The piston of my 10+ year old office chair was on the decline. Coming from a country where everything can be repaired, I was determined to repair my chair, but this is America, where everything is disposable. Not wanting to bite the bullet on a new chair, I was trying to make the chair last longer, which gave me more time to search, and I ran into this product. I bought it immediately; it arrived the next day with an upcoming delivery. I had already watched the installation video by Kevin Lehoe online, so I got working. With my OCD, I lined up the two collars perfectly, resulting in the screw holes to line up perfectly! The printed instructions included in the box, clearly tell you NOT to align them, but well, I was too excited to fix my chair! I should mention here that the instructions are printed on quality paper! I'm impressed, while also, could be a cost saving for a young company to go with flimsy recycled paper? The engineering to simplify the piston removal was ingenious - it's a joy when the chair top frees itself. I did have to take the base outside to hammer out the piston, as I didn't want to disturb my neighbors at 9pm! Installing the new piston took less than 30 seconds! Just drop it in the base, drop the top over, and it's done! It is a much cleaner design than the original with the telescopic plastic cups. The up/down action is sturdy, it rises to a good height, and I now have a functioning chair for a fraction of the cost of a new chair! This product reduces waste and increases the lifecycle. I was also immediately drawn to the rollerblade wheels, and ordered them without hesitation. I am excited to swap out the wheels when they arrive. Also went down the rabbit hole and found the PBS coverage of the startup! It's so cool that a small business came up with this amazing product line!
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Reviewed in the United States on July 7, 2026 by Pb
Works perfectly. Even added an inch of height and is more stable than the original. The removal tool for the old cylinder is worth the full price of the replacement cylinder. That tool saves time and a ton of frustration.
Reviewed in the United States on July 3, 2026 by K41martin
After all the horror stories I read about the struggles to remove cylinders I was a bit apprehensive but had no real choice as my old cylinder in the Aeron was so wobbly it was making me dizzy. This had lots of good reviews and I liked the fact it had a tool to remove the old cylinder since I did not have a pipe wrench and did not want to buy one just for this. Anyway, the kit arrived fine and I started by jacking the chair all the way up so I could have plenty of clearance to work. The supplied rings fit nicely around the old cylinder tip and went on easily. I just followed the very easy directions (leave the top ring just loose enough so it still moves, snug the lower ring right against the top one and tighten it securely with the included 5mm allen key. Then you thread in the longer bolts and start screwing them in - they push the chair right off the cylinder with not much effort at all.) In less than 5 minutes I had the seat off the chair, leaving only the base and the old cylinder. The cylinder was useless so I didn't even try to salvage anything, just got a regular old claw hammer, held the base in one hand and banged on the end of the cylinder. It popped out on the 3rd bang, and then I just slipped this new cylinder onto the base - perfect fit. What could be easier than that? All that remained was to put the seat back on, matching up the tip of the cylinder with the hole it fits into on the chair. One last thing needed - as others have said you may need to adjust the screw on the chair that presses on the button on top of the cylinder. This is accessible by removing the top cover of the tilt mechanism. I'll save you some trouble on how to do that : simply rap the front of the cover where it joins together with the lower section with a rubber mallet and it pops right up. Lift up the cover and you can clearly see the adjustment screw which is right on top of the cylinder tip. My chair needed a 4mm allen key - my guess is all Aeron chairs do as well. I had to screw it out a bit so it made the right contact with the cylinder button, testing by pressing on the chair as I went to feel the right spot where the seat stayed put after releasing the height lever. Again, all very easy. I was done with the whole job including adjusting the screw in about 20 minutes. It is too soon to say how durable this cylinder may be but it seems quite sturdy and my chair is nice and stable. I would say the removal tool itselfe makes this a good deal. It's very sturdy and can be used over and over so if I ever have to to this again I'll have the right gear. The cylinder itself seems to be the same as a lot of the other "heavy duty" ones but again the tool making it so easy is more than worth the extra few bucks you spend to get this kit. Without it you would be having a pretty miserable time, almost guaranteed.
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Reviewed in the United States on July 16, 2017 by David Delson