Gerdes brake cylinder

[N942VT]

Anyone know what size and type o rings are used in the Gerdes brake cylinders we use on the four place. I have a leaky one and would prefer to have the parts before I take it apart.
Thanks

[Mark Goldberg]

Dave, I have the orings on hand for the Gerdes. I will send you a set. Mark

[N942VT]

Thank you Mark

[Battson]

I recently disassembed and replaced O-rings on a leaky one.
The old ones looked just fine, even under the magnifying glass.
But I changed them for a new set from Mark G, and sure enough the leak has totally been solved.
Thanks Mark!