Hydraulic cylinder sealing on a B

The problem I am having is that there"s a second leak where the cylinder screws into the hose attach fitting. I have everything apart but was unable to see any sort of seal, o-ring, packing, pipe thread dope, etc. there. How is this supposed to be sealed?

thx in advance

• Hobby farm

I didn't take that end of my cylinder apart but I suspect it is the same as the gland end in sealing. If that's true, it's simply a metal-to-metal seat between the cylinder end itself and that end fitting. The sealing surfaces have to be true, burr-free, squeaky clean and the joint tightened fairly heavily for the seal to function well. If you have a continuing problem with leakage there, I'd consider using red Loc-Tite on the straight threads. You'd then have to use heat if you ever wanted to take that joint apart again. But that shouldn't be often (probably never). And it would stop any leakage. Or you could just try using any common thread sealant.

Rod