Office Chair Cylinder Replacement,Heavy-Duty Gas Lift Cylinder Fits Most Chairs,Highest End Class 4 Hydraulic Pneumatic Piston, Universal Size

Its very stable and the price is right. I would absolutely buy again, but hopefully not too soon.

This item is amazing. My office chair lift broke and while I was skeptical, I purchased this lift. It took minutes to install and it works perfectly. DEFINITELY worth getting if your office chair lift isn't working anymore.

Had to go onto You Tube to get instruction on removing chairs old hydraulic cylinder. Be advised if you remove cylinder the way I was forced to the old part will be unusable. The way I look at this conundrum is it’s already broke so it can’t be fixed.Take a regular ol” every day hammer and turn chair on side. Look at bottom of cylinder protruding out of the center of the base with wheels on. Hit the cylinder as hard as you can and drive it out. Chair will now be seat section and wheeled base. Now use the lever that is used to raise and lower sear and get the cylinder to fully extend. If that doesn’t work pull on cylinder and make it extend. Where cylinder enters chair base apply WD40 or a light oil at the area where the shaft enters seat base. GET PIPE WRENCH and grasp the shiny metal shaft. Turn the shaft, it will take a lot of pressure to get it to turn, Persevere! It will eventuallyStart to turn, add more oil if need be. Once loosened it will be easier to turn, just keep turning it till it comes out. Then install large black end into middle of chair base. Lift seat section up and slide shaft into bottom of seat assembly. Remember to slide the black plastic cylinders onto shaft before placing shaft in chair base. Now you have new office desk chair. Good luck I love this fix, as where can you get a desk chair for less than $25.

The piston was not functioning and the chair was too low for my liking. My wife gifted it to me for Christmas. I wasn’t fond of it, but I hoped to get a new chair. At 400 lbs, my options were limited. However, this new piston truly amazed me. It operates wonderfully and was simple to install. I’m very happy now.

I have replaced several chair lifts - it gets easier each time. And this replacement lift is heavier duty than what is usually installed on chairs from the store. It also provides a little longer lift which is a benefit for taller fellows.

Fit my chair, very secure and sturdy, the height was better than the gas cylinder that came with the chair. Take a look at the pictures included in the project description, install takes no time, just make sure you have a pipe wrench so you can unscrew you’re existing cylinder

Great fii

In some cases I suppose you could pop out the old one and place this one right in in 30 minutes and it would work. If your old gas cylinder is welded (mine was, from walmart years ago) be prepared to be completely sol and I would just ship it back and get a refund right then.After watching many videos and still struggling to get the old canister out (1 hr in) I finally realized it was welded. Didn't want to cut/grind the only bc I'd have no fallback option, but figured I had to. 2-3 hrs in I realized I may have actually been able to keep the old part if cutting did not work. Also this thing came with 3-4 nuts in it but if its anything other than a quick install the nuts are guaranteed to fall out of place and you'll never be able to websearch how they're supposed to be in.Hr 4 was when I finally grinded it small enough to fit and had safety concerns but tried anyways. And hr 5 was when it broke anyways and I decided to just go buy a new one which was what I had tried to avoid doing in the first place.This could have been averted entirely with even just 1 piece of paper with the list of parts in the box and showing the inside of the canister. But I guess that is one penny too many and every corner must be cut. The old chair manual was inadequate, and any paper for this was non-existent, and I went from poor chair to no chair, and lost ~4 hrs of time trying to make this work.0/5 stars if I could.