Hydraulic Seal Identification

How to properly locate and identify various types of hydraulic seals. This video is not meant as a step by step guide to repairing a hydraulic cylinder. It is meant for demonstration of the proper way to identify and measure hydraulic seals only.

[jmvoltrino]

hydraulics tend to be a magical subject that few shops want to spill the beans on. Thanks for the straightforward and informative video!

[richardsellars]

Thank you for a very informative video, explains what others leave out. I had no problems watching or understand the content. This is what You Tube is about, not perfection.

[Hydraulic]

To the couple gentleman that left less than stellar replies: It’s obvious he’s not a mechanic, it’s also obvious he used different tools than one usually would, but did you not get the jest of the video? It was about helping end users learn about seals and helping them identify seals.
Hell, in a world where a machine is now obsolete after 10 years people need all the help they can get. I’ve been in the hydraulic world long enough to know we don’t always have the right tools and we also don’t get the tools we do get in either Brass or Stainless like some Engineer recommended, so take it with a grain of salt and give credit where credit is due. This gentleman got most people to smile with his bionic hands and magical finger snaps all while helping others that need it.
We just made a cylinder Head (or packing gland) for a large John Deere front end loader. It was broken when a large rock came over the back of the bucket and wedged in between the Head and a cross member of the loaders lift arms. My customer called Deere and was told the Head was $5, 000.00+ and a new cylinder was over $12, 000.00. Key word is WAS as both the Head and entire cylinder are obsolete. After weeks of hunting my customer brought it in and we spend the next 3 days making this monstrosity, but it saved the cylinder. He was even more excited that I had all the seals for said cylinder in stock, so we reassembled and tested the cylinder before sending it home.
Part of my point is what he taught most likely helped several people. I wouldn’t recommend using a pipe wrench or using a knife, but I’ve done both on jobs when they were the only tools available. Being professionals (?) there’s no way you can convince me you haven’t done the same thing, unless you’ve only been doing this for a couple years. I’ve done it long enough that there aren’t many cheats around that I haven’t used, or at least tried. Give the man some credit, he did a good job considering it’s not his job.
Now you can reply and correct me, I await your superfluous answer(s).

[lemgarrett]

Thank you very much.
I must have watched 30 videos before anybody has even mentioned the piston or u-cups and how to get them on.
Thank you again

[Phiyedough]

That is a useful tip about heating just the seal. I was trying using a hot air gun but that was expanding the piston as well.

[eddy]

Hi I have a bobcat and right underneath the wiper seal there’s what you called a u cup seal sometimes there’s a spring inside the seal other times there’s just a sold piece of rubber what’s better and will the one with the spring last longer or the same ?? Thank in advance

[adamsorell]

My inner gland seals are crumbling. How can i measure what it takes? Also is the piston aluminum? Maybe that why no wear band. Aluminum softer than steel

[fukcggle]

This was informational and entertaining. Thanks for sharing with us.

[jatinsethi]

Great videos helps me a lot . Great job carry on.

[miraclestemcell]

It says to use brass tools but he uses steel. Do not use a pipe wrench on the piston rod nut. Do not cut the u-cups off in this fashion. This process is very dangerous. He is a seal guy and not a fluid power mechanic. I know because I am.

[TheWhere-Bear]

If this is a video on seal identification then it falls short with comments like" it feels like an N70" and others about how the part feels which is no good for discerning what kind to order.

[ionolaru]

nu am vazut pana in prezent cum se elimina sicanele produse pe suprafata interioara a unui cilindru, si care ar fi diferenta dintre diametrul nou si diametrul vechi (nominal) .

[gerlandkent]

thank you for you're helpful video

[Failedmusician]

great video but don't let your camera person film another video. The constant out of focus shots were frustrating.

[matthewkibler]

I can't believe you use a pipe wrenche and not the right size socket

[nickjohnson]

Why order seals from u at work. We call your book the fancy book 🤣 got those odd 5 piece seals

[peterhubertus]

sorry, but that is poor camera work: Either point the camera to where the action is or move the action to where the camera is looking.

[denjhill]

Good information, but the camera needs some work. Too much darting around. Keep it still so viewers can focus on what you're talking about.

[lloydmorrison]

BUST a NUT! :) Seriously, Great video!

[robbypro]

Chevron packing is what they are called