Paramount Machine Co. brake cylinders

Has anyone ever heard of Paramount Machine Co. from Ohio for master brake cylinders? Doug and I's Rv-3 has them. They had a small leak so we pulled them for overhaul, and were surprised to see they were not matco or cleveland. Vans sells repair kits for matco and cleveland for cheap. Would it make sense to buy new cylinders or just repair these using o-rings from another kit or auto parts store? Would any aircraft salvage part companies be a good resource? or just trash them? I haven't disassembled them yet to see overall condition and parts needed.

Thanks
Eugene

If it was me and the airplane had been flying with these for sometime i
would just rebuild using the proper aircraft grade o-rings. You can simply
measure the old o-rings and order new ones that are compatible with aircraft
hydrolic fluid.

Jim Miller

http://www.paramontmachinecompany.com/

Google is your friend