[Latitude 28]

While change my salon slide seal found the rear slide lock leaking from the plunger/pin area.  Decided to try replacing the seals (see image below for part numbers) mainly to see If it is possible. 

Removed the switch housing on top of the lock and pushed the slide pin out.  The internal seal was completely deteriorated and retained by a snap ring.  From what I could tell that seal was an squared "U" shaped seal, not an O-ring,  The "U" was facing the pressure side of the chamber.  Using my Dial Calipers I came up with dimensions for the internal seal and the others as well.  The closest McMaster-Carr had to the square "U" was a X profile and Double X-Profile seal.  I chose the double x profile as it is designed for a dynamic installation.  I was able to fit the seal into the channel without having to remove the internal snap ring after cleaning it out thoroughly. 

The next item to note, on the slide pin is two Teflon backing rings on each side of the O-ring.  Those are solid and not split like most backing ringsI made a tool to take it apart but did not bother as they looked great to reuse as is.  

Checked the operation of the switch with an OHM meter all good there.  

Reassembled the lock assembly and installed into the coach for leak and operational checks.  Happy to report no leaks and works great!!