.lots of stuff snipped
There are far better O-rings out there now. I wish someone
like McFarlane would come up with an STC'd oleo kit that used
fluorosilicone or EPDM or some other advanced compound rings. Tougher
and with a better temperature range. There are "quad" O-rings
available, too, that would do a better job. In cross-section they look
like a four-leaf clover, so there's more contact area on two places
and they are more flexible, too. Double the sealing capacity, and
resistant to rolling.

Dan


Cherokee strut seals are quad 0-rings (or at least they are square-ish).
Typically they last 20+ years and start to leak fluid. That can continue
for many years. When I replaced all mine, the nose immediately started
leaking. Took 2-4 days to deflate. After a couple of ounces of
Granville, it stopped. Not sure if we bunged up the install or the ring
had a defect. Still up after a year.

Oddly, I thought the new seals would make the struts move more freely.
That was not the case with mine. They still have a healthy amount of
"stick".

Good luck,
Mike