question about hydraulic cylinders

[HelpMe?]

I've got 2 leaky hydraulic cylinders. They're on a boat outdrive, but the principles seem the same and you guys seem like the most knowledgeable forum I could find for this question. I found 2 new "old stock" cylinders online for maybe $100 more than what it would cost me for the rebuild parts. Given that I'd need to dig up a gland nut wrench and fight them to disassemble, that seems like it makes more sense than trying to rebuild them. BUT, this boat manufacturer went out of business in the early 1990s, so it's possible they could be up to 25 years old. Any idea as to the he odds that the seals and o-rings might have gone bad over that time frame, even though they've never been used? Thanks for any insight you might be able to provide!

 

[HelpMe?]

NOTE: this seems more appropriate over in Shop Talk so I posted it there. If a mod wants to delete this thread, thanks!

 

[farmshop]

NOTE: this seems more appropriate over in Shop Talk so I posted it there. If a mod wants to delete this thread, thanks!

All depends on how they were stored. Just as a rebuild can get out of hand if parts are corroded or a rod is bent. I would disassemble your cylinders and inspect if all is needed is seals I would rebuild